[inductor] Fix an issue causing "Could not generate fp64 outputs" (#92036)
Summary: Fix a fp64 version of model failed-to-run issue when convert_element_type
appears in the model. The failure can cause some numerical difference
recognized as accuracy error since the fp64 baseline result is not
available, and thus distracts Minifier from finding a real culprit for
accuracy error.
See the discussion in https://github.com/pytorch/torchdynamo/issues/1812
Pull Request resolved: https://github.com/pytorch/pytorch/pull/92036
Approved by: https://github.com/ngimel