[BE] Enable Ruff's Flake8 PYI045 (#111184)
Enable [iter-method-return-iterable (PYI045)](https://docs.astral.sh/ruff/rules/iter-method-return-iterable/#iter-method-return-iterable-pyi045)
Link: #110950
Pull Request resolved: https://github.com/pytorch/pytorch/pull/111184
Approved by: https://github.com/Skylion007
