PR Summary

As part of investigating #24383, I noticed that LogLocator has custom behaviour for polar Axes. This dates back 13 years (!!) to 1fdd5a8. Since log-scaled polar Axes are broken anyway, I thought I would remove this logic and see if any existing tests break.

I've also added a new test to check the y-ticks on a log-scaled polar plot. Prior to this PR the ticks were given at [ 0.01 0.1 1. 10. ], not including the max limit of 100, showing that the custom polar logic in LogLocator was wrong anyway.

PR Checklist

Tests and Styling

• Has pytest style unit tests (and pytest passes).
• Is Flake 8 compliant (install flake8-docstrings and run flake8 --docstring-convention=all).

Documentation

• Documentation is sphinx and numpydoc compliant (the docs should build without error).
• New plotting related features are documented with examples.

Release Notes

• New features are marked with a .. versionadded:: directive in the docstring and documented in doc/users/next_whats_new/
• API changes are marked with a .. versionchanged:: directive in the docstring and documented in doc/api/next_api_changes/
• Release notes conform with instructions in next_whats_new/README.rst or next_api_changes/README.rst