STYLE: Enable unnecessary list index lookup

[uzzell]

• All code checks passed.

Associated with #48855. Enables the Pylint type "R" warning unnecessary-list-index-lookup. Also updates the list of intentionally disabled checks.

[MarcoGorelli]

thanks for working on this

could you please:

• run the pre-commit checks (see contributing guide for how)
• fetch upstream, and rebase onto it, looks like you have some irrelevant changes in here

[uzzell]

@MarcoGorelli , are you talking about the changes to pyproject.toml? I took the liberty of updating the list of intentionally disabled warnings: wrong-import-order appeared twice in the list, while broad-except and overridden-final-method were in the list at the top of #48855 but not in the section for intentionally disabled warnings in pyproject.toml.

If you'd like, I can change them back.

[MarcoGorelli]

ah, that's fine then, thanks for explaining!

[MarcoGorelli]

thanks @uzzell