Reducing tool.ruff.lint.per-file-ignores.

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We are looking to reduce the number of rules ignored in tool.ruff.lint.per-file-ignores by delinting the codebase. This is a great opportunity for new contributors to get involved!

Guidelines:

• We welcome delinting of one rule per file, or keeping changes as small as possible per pull request, as it makes it easier for reviewers to check the changes.
• If your PR addresses multiple rules or files, reviewers might consider it a large change and suggest splitting it into multiple PRs.
• When modifying runtime codebases, be careful not to break backward compatibility. For example, when delinting E722 'bare-except', specifying the type of exception to catch may result in different behavior before and after the change.
• If you want to delint without changing the implementation, use the minimal # noqa: RULE comments.