interpreter: stop using hasattr for held_object
interpreter: stop using hasattr for held_object

We have unholder or isinsatnce(ObjectHolder) for that

pexip/meson,jpakkane/meson,jpakkane/meson,pexip/meson,mesonbuild/meson,QuLogic/meson,QuLogic/meson,mesonbuild/meson,pexip/meson,pexip/meson,mesonbuild/meson,jpakkane/meson,jpakkane/meson,mesonbuild/meson,QuLogic/meson,QuLogic/meson,pexip/meson,mesonbuild/meson,pexip/meson,QuLogic/meson,mesonbuild/meson,pexip/meson,mesonbuild/meson,pexip/meson,jpakkane/meson,jpakkane/meson,pexip/meson,jpakkane/meson,mesonbuild/meson,mesonbuild/meson,jpakkane/meson,jpakkane/meson,QuLogic/meson,pexip/meson,mesonbuild/meson,QuLogic/meson,QuLogic/meson,QuLogic/meson