Handle missing initializers in allocation planner to fix crashes with DML provider (#5244)
Handle missing initializers in allocation planner to fix crashes with DML provider (#5244)

* Fix memory planning bug with DML EP

* Address PR comments

* Fix typo
microsoft/onnxruntime,microsoft/onnxruntime,microsoft/onnxruntime,microsoft/onnxruntime,microsoft/onnxruntime,microsoft/onnxruntime,microsoft/onnxruntime,microsoft/onnxruntime,microsoft/onnxruntime,microsoft/onnxruntime,microsoft/onnxruntime,microsoft/onnxruntime