Add unit test files mistakenly excluded from [30085].

See #9256, #25349.

git-svn-id: https://develop.svn.wordpress.org/trunk@30367 602fd350-edb4-49c9-b593-d223f7449a82
Add a missing `@return` description for `WP_Screen::get_option()`.

Also declare the default value for the `$key` parameter.

Props dustyf for the initial patch.
Fixes #30363.


git-svn-id: https://develop.svn.wordpress.org/trunk@30368 602fd350-edb4-49c9-b593-d223f7449a82
Fix parameter description syntax for `WP_Screen::get_option()`.

Props zrothauser for the initial patch.
See [30368]. Fixes #30363.


git-svn-id: https://develop.svn.wordpress.org/trunk@30369 602fd350-edb4-49c9-b593-d223f7449a82
Add inline `@see` tags to the docs for the `get_categories_taxonomy` hook.

Props tw2113.
Fixes #30310.


git-svn-id: https://develop.svn.wordpress.org/trunk@30370 602fd350-edb4-49c9-b593-d223f7449a82