### Godot version

master

### System information

Godot v4.2.beta (0ea75d77c) - Windows 10.0.22621 - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 2070 (NVIDIA; 31.0.15.3598) - Intel(R) Core(TM) i7-10750H CPU @ 2.60GHz (12 Threads)

### Issue description

When any of the Import, Filesystem, Node, or History docks are floating, changing an editor feature crashes the engine.
Changing any setting or selecting a different profile triggers it.

This is because `EditorNode::_feature_profile_changed` assumes the docks are in a `TabContainer`, and if they are floating they aren't in one.


### Steps to reproduce

Make any of these docks floating: Import, Filesystem, Node, or History
Open Editor Features (Editor -> Manage Editor Features...)
Make a profile (if you have none) or change a setting on the existing profile

### Minimal reproduction project

n/a
}
	if (editor_plugin_screen) {
		editor_plugin_screen->make_visible(false);
	}
	editor_plugin_screen = new_editor;
	editor_plugin_screen->make_visible(true);
	editor_plugin_screen->selected_notify();
	int plugin_count = editor_data.get_editor_plugin_count();
	for (int i = 0; i < plugin_count; i++) {
		editor_data.get_editor_plugin(i)->notify_main_screen_changed(editor_plugin_screen->get_name());
	}
	if (EDITOR_GET("interface/editor/separate_distraction_mode")) {
		if (p_which == EDITOR_SCRIPT) {
			set_distraction_free_mode(script_distraction_free);
		} else {
			set_distraction_free_mode(scene_distraction_free);
		}
	}
}
void EditorNode::select_editor_by_name(const String &p_name) {
	ERR_FAIL_COND(p_name.is_empty());
	for (int i = 0; i < main_editor_buttons.size(); i++) {
		if (main_editor_buttons[i]->get_text() == p_name) {
			editor_select(i);
			return;
		}
	}
	ERR_FAIL_MSG("The editor name '" + p_name + "' was not found.");
}
void EditorNode::add_editor_plugin(EditorPlugin *p_editor, bool p_config_changed) {