[XLA:Python:XRT] Fix missing superclass constructor invocation in XrtBackend.
[XLA:Python:XRT] Fix missing superclass constructor invocation in XrtBackend.

PiperOrigin-RevId: 247127101

cxxgtxy/tensorflow,xzturn/tensorflow,adit-chandra/tensorflow,aldian/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,Intel-Corporation/tensorflow,freedomtan/tensorflow,DavidNorman/tensorflow,tensorflow/tensorflow-pywrap_saved_model,xzturn/tensorflow,freedomtan/tensorflow,annarev/tensorflow,chemelnucfin/tensorflow,DavidNorman/tensorflow,alsrgv/tensorflow,tensorflow/tensorflow,yongtang/tensorflow,yongtang/tensorflow,xzturn/tensorflow,annarev/tensorflow,arborh/tensorflow,paolodedios/tensorflow,sarvex/tensorflow,ghchinoy/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,ghchinoy/tensorflow,renyi533/tensorflow,petewarden/tensorflow,Intel-tensorflow/tensorflow,adit-chandra/tensorflow,xzturn/tensorflow,paolodedios/tensorflow,karllessard/tensorflow,davidzchen/tensorflow,ghchinoy/tensorflow,Intel-tensorflow/tensorflow,ppwwyyxx/tensorflow,adit-chandra/tensorflow,renyi533/tensorflow,ghchinoy/tensorflow,paolodedios/tensorflow,chemelnucfin/tensorflow,arborh/tensorflow,tensorflow/tensorflow,xzturn/tensorflow,alsrgv/tensorflow,chemelnucfin/tensorflow,Intel-tensorflow/tensorflow,yongtang/tensorflow,alsrgv/tensorflow,aam-at/tensorflow,aldian/tensorflow,tensorflow/tensorflow-pywrap_saved_model,tensorflow/tensorflow-pywrap_saved_model,renyi533/tensorflow,alsrgv/tensorflow,frreiss/tensorflow-fred,ghchinoy/tensorflow,davidzchen/tensorflow,annarev/tensorflow,tensorflow/tensorflow-pywrap_saved_model,arborh/tensorflow,yongtang/tensorflow,tensorflow/tensorflow,freedomtan/tensorflow,tensorflow/tensorflow-pywrap_saved_model,aam-at/tensorflow,jhseu/tensorflow,paolodedios/tensorflow,gautam1858/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,petewarden/tensorflow,karllessard/tensorflow,yongtang/tensorflow,tensorflow/tensorflow,cxxgtxy/tensorflow,alsrgv/tensorflow,jhseu/tensorflow,cxxgtxy/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,DavidNorman/tensorflow,Intel-Corporation/tensorflow,renyi533/tensorflow,tensorflow/tensorflow-pywrap_saved_model,petewarden/tensorflow,freedomtan/tensorflow,xzturn/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,gunan/tensorflow,ghchinoy/tensorflow,adit-chandra/tensorflow,ppwwyyxx/tensorflow,freedomtan/tensorflow,chemelnucfin/tensorflow,davidzchen/tensorflow,tensorflow/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,Intel-tensorflow/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,Intel-tensorflow/tensorflow,renyi533/tensorflow,karllessard/tensorflow,Intel-tensorflow/tensorflow,Intel-Corporation/tensorflow,arborh/tensorflow,tensorflow/tensorflow-pywrap_saved_model,frreiss/tensorflow-fred,aam-at/tensorflow,tensorflow/tensorflow,frreiss/tensorflow-fred,sarvex/tensorflow,xzturn/tensorflow,renyi533/tensorflow,Intel-Corporation/tensorflow,gunan/tensorflow,karllessard/tensorflow,chemelnucfin/tensorflow,jhseu/tensorflow,jhseu/tensorflow,xzturn/tensorflow,tensorflow/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,frreiss/tensorflow-fred,davidzchen/tensorflow,gunan/tensorflow,frreiss/tensorflow-fred,davidzchen/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,gautam1858/tensorflow,jhseu/tensorflow,adit-chandra/tensorflow,davidzchen/tensorflow,ppwwyyxx/tensorflow,annarev/tensorflow,gunan/tensorflow,annarev/tensorflow,DavidNorman/tensorflow,davidzchen/tensorflow,frreiss/tensorflow-fred,aldian/tensorflow,paolodedios/tensorflow,karllessard/tensorflow,petewarden/tensorflow,gunan/tensorflow,annarev/tensorflow,jhseu/tensorflow,yongtang/tensorflow,aldian/tensorflow,alsrgv/tensorflow,annarev/tensorflow,ghchinoy/tensorflow,xzturn/tensorflow,chemelnucfin/tensorflow,ppwwyyxx/tensorflow,ghchinoy/tensorflow,karllessard/tensorflow,adit-chandra/tensorflow,renyi533/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,sarvex/tensorflow,gunan/tensorflow,ghchinoy/tensorflow,renyi533/tensorflow,DavidNorman/tensorflow,gunan/tensorflow,chemelnucfin/tensorflow,davidzchen/tensorflow,gautam1858/tensorflow,Intel-Corporation/tensorflow,xzturn/tensorflow,alsrgv/tensorflow,chemelnucfin/tensorflow,yongtang/tensorflow,ppwwyyxx/tensorflow,DavidNorman/tensorflow,ghchinoy/tensorflow,renyi533/tensorflow,cxxgtxy/tensorflow,aam-at/tensorflow,ppwwyyxx/tensorflow,paolodedios/tensorflow,annarev/tensorflow,cxxgtxy/tensorflow,petewarden/tensorflow,davidzchen/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,gautam1858/tensorflow,sarvex/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,gautam1858/tensorflow,gautam1858/tensorflow,freedomtan/tensorflow,jhseu/tensorflow,paolodedios/tensorflow,freedomtan/tensorflow,paolodedios/tensorflow,yongtang/tensorflow,adit-chandra/tensorflow,frreiss/tensorflow-fred,aam-at/tensorflow,tensorflow/tensorflow-pywrap_saved_model,aldian/tensorflow,jhseu/tensorflow,petewarden/tensorflow,ghchinoy/tensorflow,aam-at/tensorflow,frreiss/tensorflow-fred,aldian/tensorflow,frreiss/tensorflow-fred,tensorflow/tensorflow-pywrap_saved_model,aam-at/tensorflow,gautam1858/tensorflow,cxxgtxy/tensorflow,aam-at/tensorflow,Intel-Corporation/tensorflow,annarev/tensorflow,arborh/tensorflow,adit-chandra/tensorflow,renyi533/tensorflow,DavidNorman/tensorflow,petewarden/tensorflow,tensorflow/tensorflow-pywrap_saved_model,karllessard/tensorflow,petewarden/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,aldian/tensorflow,gunan/tensorflow,Intel-Corporation/tensorflow,gautam1858/tensorflow,sarvex/tensorflow,arborh/tensorflow,paolodedios/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,davidzchen/tensorflow,jhseu/tensorflow,ppwwyyxx/tensorflow,tensorflow/tensorflow,Intel-Corporation/tensorflow,freedomtan/tensorflow,davidzchen/tensorflow,jhseu/tensorflow,petewarden/tensorflow,freedomtan/tensorflow,arborh/tensorflow,chemelnucfin/tensorflow,tensorflow/tensorflow-pywrap_saved_model,frreiss/tensorflow-fred,sarvex/tensorflow,karllessard/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,petewarden/tensorflow,DavidNorman/tensorflow,arborh/tensorflow,jhseu/tensorflow,adit-chandra/tensorflow,karllessard/tensorflow,frreiss/tensorflow-fred,yongtang/tensorflow,ghchinoy/tensorflow,freedomtan/tensorflow,karllessard/tensorflow,alsrgv/tensorflow,ppwwyyxx/tensorflow,adit-chandra/tensorflow,frreiss/tensorflow-fred,xzturn/tensorflow,freedomtan/tensorflow,gautam1858/tensorflow,DavidNorman/tensorflow,xzturn/tensorflow,cxxgtxy/tensorflow,yongtang/tensorflow,paolodedios/tensorflow,sarvex/tensorflow,aam-at/tensorflow,DavidNorman/tensorflow,paolodedios/tensorflow,gautam1858/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,gautam1858/tensorflow,ppwwyyxx/tensorflow,freedomtan/tensorflow,adit-chandra/tensorflow,aam-at/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,arborh/tensorflow,Intel-tensorflow/tensorflow,renyi533/tensorflow,petewarden/tensorflow,davidzchen/tensorflow,cxxgtxy/tensorflow,petewarden/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,adit-chandra/tensorflow,tensorflow/tensorflow,tensorflow/tensorflow,tensorflow/tensorflow,karllessard/tensorflow,DavidNorman/tensorflow,renyi533/tensorflow,annarev/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,aldian/tensorflow,Intel-tensorflow/tensorflow,Intel-tensorflow/tensorflow,chemelnucfin/tensorflow,annarev/tensorflow,gunan/tensorflow,gunan/tensorflow,arborh/tensorflow,gunan/tensorflow,arborh/tensorflow,alsrgv/tensorflow,chemelnucfin/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,jhseu/tensorflow,aam-at/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,chemelnucfin/tensorflow,Intel-tensorflow/tensorflow,ppwwyyxx/tensorflow,alsrgv/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,arborh/tensorflow,yongtang/tensorflow,Intel-tensorflow/tensorflow,DavidNorman/tensorflow,gautam1858/tensorflow,ppwwyyxx/tensorflow,alsrgv/tensorflow,aam-at/tensorflow,ppwwyyxx/tensorflow,sarvex/tensorflow,gunan/tensorflow,alsrgv/tensorflow