[SPARK-55621][PYTHON] Fix ambiguous and unnecessary unicode usage

[gaogaotiantian]

What changes were proposed in this pull request?

Fixed all the unnecessary and ambiguous unicode character usage.
A set of ruff rules are also added to prevent future regressions.

Why are the changes needed?

We should avoid using non-ascii unicode character usage as much as possible. There are few rationales behind it

• Sometimes it's just wrong. e.g. ‘index’ vs 'index'
• Some editor (VSCode) will highlight it as a warning and some editor/terminal might not display it well
• It's difficult to keep consistency because people don't know how to type that
• For docstrings, it could actually be displayed somewhere while users are using it and unicode could cause problems

Does this PR introduce any user-facing change?

No.

How was this patch tested?

ruff check passed.

Was this patch authored or co-authored using generative AI tooling?

No.