Run the "wp_editor_settings" filter for the Classic block TinyMCE settings

[azaozz]

It is meant to filter (unrelated) wp_editor() settings but accepts an array for tinymce that adds to/overrides the default TinyMCE settings. Also some plugins may be using it to add other editor filters like mce_external_plugins, mce_buttons, etc. A quick GH search shows 47k hits for this filter (most are duplicated code, but still...).

[azaozz]

Another filter that we should keep is disable_captions. It just passes a setting from PHP to JS to change how image captions are handled. That seems to be used quite a bit too according to a quick GH search.

[azaozz]

In 45348.diff:

• Add the wp_editor_settings and disable_captions filters at the appropriate places.
• Add some docs explaining that the settings are used to extend and override the default TinyMCE settings.

Note that this diff also includes Gary's 45338.diff from #45338.

[azaozz]

In 45348.2.diff: refresh the diff after [43901].

[pento]

45348.2.diff​ is good to go.

[azaozz]

In 43914:

TinyMCE: Run the "wp_editor_settings" and "disable_captions" filters for the Classic block. Fixes possible regressions in plugins that use these filters, also plugins that use them to add filters for the buttons, external plugins, etc.

Fixes #45348.

[SergeyBiryukov]

Reopening for trunk.

[desrosj]

In 44265:

TinyMCE: Run the filters for the Classic block.

The wp_editor_settings and disable_captions filters need to be run for the Classic Block.

This fixes possible regressions in plugins that use these filters, and plugins that use them to add filters for the buttons, external plugins, etc.

Props azaozz.

Merges [43914] into trunk.

Fixes #45348.