Adding fix for invalid annotation types for dictionary (#49425)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/49362
**Summary:**
This PR fixes the issue where invalid annotation types are used for a dictionary.
Unsupported assertion message is generated for all invalid annotations
**Test Case**:
python test/test_jit.py TestJit.test_dict_invalid_annotations
Pull Request resolved: https://github.com/pytorch/pytorch/pull/49425
Reviewed By: navahgar
Differential Revision: D25601578
Pulled By: nikithamalgifb
fbshipit-source-id: 91633e3d0891bdcb5402f044a74d02fe352ecd6f
