Improve the inline documentation for `image_edit_apply_changes()`.

Including:
* Add a correct type (array) for the `$changes` parameter
* Add the `@since` version
* Add proper descriptions for both parameters and the return value.

Props tillkruess for the initial patch.
See #30508.

Built from https://develop.svn.wordpress.org/trunk@30644


git-svn-id: http://core.svn.wordpress.org/trunk@30634 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Specify a type (array) for the `$post_data` parameter in the DocBlock for `wp_autosave()`.

Props tillkruess.
See #30508.

Built from https://develop.svn.wordpress.org/trunk@30645


git-svn-id: http://core.svn.wordpress.org/trunk@30635 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Improve inline documentation for `image_constrain_size_for_editor()`.

Includes:
* Proper formatting, plus adding a type for the `$context` parameter
* Inline `@see` tags in the description and backtick-escaping inline code
* Parameter, type, and description alignment

Props tillkruess for the initial patch.
Fixes #30508.

Built from https://develop.svn.wordpress.org/trunk@30646


git-svn-id: http://core.svn.wordpress.org/trunk@30636 1a063a9b-81f0-0310-95a4-ce76da25c4cd