### 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
editor_data.set_edited_scene(p_idx);
	Node *new_scene = editor_data.get_edited_scene_root();
	if (Popup *p = Object::cast_to<Popup>(new_scene)) {
		p->show();
	}
	SceneTreeDock::get_singleton()->set_edited_scene(new_scene);
	if (get_tree()) {
		get_tree()->set_edited_scene_root(new_scene);
	}
	if (new_scene) {
		if (new_scene->get_parent() != scene_root) {
			scene_root->add_child(new_scene, true);
		}
	}
	Dictionary state = editor_data.restore_edited_scene_state(editor_selection, &editor_history);
	_edit_current(true);
	_update_title();
	scene_tabs->update_scene_tabs();
	if (tabs_to_close.is_empty()) {
		call_deferred(SNAME("_set_main_scene_state"), state, get_edited_scene()); 
	}
}
void EditorNode::setup_color_picker(ColorPicker *p_picker) {
	p_picker->set_editor_settings(EditorSettings::get_singleton());
	int default_color_mode = EDITOR_GET("interface/inspector/default_color_picker_mode");
	int picker_shape = EDITOR_GET("interface/inspector/default_color_picker_shape");
	p_picker->set_color_mode((ColorPicker::ColorModeType)default_color_mode);
	p_picker->set_picker_shape((ColorPicker::PickerShapeType)picker_shape);
}
bool EditorNode::is_scene_open(const String &p_path) {