Fix mypy errors attributed to pytorch_lightning.core.module.py

[jxtngx]

What does this PR do?

Fix mypy errors attributed to pytorch_lightning.core.module.py for issue #13445

Does your PR introduce any breaking changes? If yes, please list them.

Before submitting

• Was this discussed/approved via a GitHub issue? (not for typos and docs)
• Did you read the contributor guideline, Pull Request section?
• Did you make sure your PR does only one thing, instead of bundling different changes together?
• Did you make sure to update the documentation with your changes? (if necessary)
• Did you write any new necessary tests? (not for typos and docs)
• Did you verify new and existing tests pass locally with your changes?
• Did you list all the breaking changes introduced by this pull request?
• Did you update the CHANGELOG? (not for typos, docs, test updates, or minor internal changes/refactors)

PR review

Anyone in the community is welcome to review the PR.
Before you start reviewing, make sure you have read the review guidelines. In short, see the following bullet-list:

• Is this pull request ready for review? (if not, please submit in draft mode)
• Check that all items from Before submitting are resolved
• Make sure the title is self-explanatory and the description concisely explains the PR
• Add labels and milestones (and optionally projects) to the PR so it can be classified

[jxtngx]

Original errors after removing module from pyproject.toml can be viewed at: https://github.com/JustinGoheen/lightning/blob/lightningmodule/code-quality/type-hints/module_typehint_errors.md

[rohitgr7]

It looks good, but there are some ignores which need some investigation. Will do.

[jxtngx]

apologies, I'm no longer able to keep this PR up to date.

[awaelchli]

apologies, I'm no longer able to keep this PR up to date.

No worries, I will address reviews and finish it. There shouldn't be too much work left here.
@rohitgr7 @carmocca