### Godot version

Godot 4.0 RC1 

### System information

MacOS Ventura 13.2

### Issue description

When in the "Text Editor" Help section and trying to change either the:

* Help Font Size
* Help Source Font Size
* Help Title Font Size

Changing the font size has zero effect on the font size.

See below example where "Help Font Size" is 40 however this does not reflect in the godot docs.

<img width="1259" alt="image" src="https://user-images.githubusercontent.com/8476589/218257090-04d14178-a9b7-4c3b-95e4-cb9a99f7f022.png">


### Steps to reproduce

1. Open Editor Settings
2. Click on "Help" within the "Text Editor" section
3. Change the font sizes (Help Font Size, Source Font Size, Title font size)
4. Close the editor settings
5. Observe that changes to the font size had no effect on the font size within the editor godot docs text.

Even restarting Godot has no effect on the font size within Help.

### Minimal reproduction project

N/A
if (editor_run.get_status() == EditorRun::STATUS_PLAY) {
		play_button->set_pressed(!_playing_edited);
		play_scene_button->set_pressed(_playing_edited);
		return;
	}
	play_button->set_pressed(false);
	play_button->set_icon(gui_base->get_theme_icon(SNAME("MainPlay"), SNAME("EditorIcons")));
	play_scene_button->set_pressed(false);
	play_scene_button->set_icon(gui_base->get_theme_icon(SNAME("PlayScene"), SNAME("EditorIcons")));
	play_custom_scene_button->set_pressed(false);
	play_custom_scene_button->set_icon(gui_base->get_theme_icon(SNAME("PlayCustom"), SNAME("EditorIcons")));
	String write_movie_file;
	if (write_movie_button->is_pressed()) {
		if (p_current && get_tree()->get_edited_scene_root() && get_tree()->get_edited_scene_root()->has_meta("movie_file")) {
			
			write_movie_file = get_tree()->get_edited_scene_root()->get_meta("movie_file");
		} else {
			write_movie_file = GLOBAL_GET("editor/movie_writer/movie_file");
		}
		if (write_movie_file == String()) {
			show_accept(TTR("Movie Maker mode is enabled, but no movie file path has been specified.\nA default movie file path can be specified in the project settings under the Editor > Movie Writer category.\nAlternatively, for running single scenes, a `movie_file` string metadata can be added to the root node,\nspecifying the path to a movie file that will be used when recording that scene."), TTR("OK"));
			return;
		}
	}
	String run_filename;
	if ((p_current && p_custom.is_empty()) || (editor_data.get_edited_scene_root() && !p_custom.is_empty() && p_custom == editor_data.get_edited_scene_root()->get_scene_file_path())) {
		Node *scene = editor_data.get_edited_scene_root();
		if (!scene) {
			show_accept(TTR("There is no defined scene to run."), TTR("OK"));
			return;