### 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
Button *add_bottom_panel_item(String p_text, Control *p_item);
	void make_bottom_panel_item_visible(Control *p_item);
	void raise_bottom_panel_item(Control *p_item);
	void hide_bottom_panel();
	void remove_bottom_panel_item(Control *p_item);
	Variant drag_resource(const Ref<Resource> &p_res, Control *p_from);
	Variant drag_files_and_dirs(const Vector<String> &p_paths, Control *p_from);
	void add_tool_menu_item(const String &p_name, const Callable &p_callback);
	void add_tool_submenu_item(const String &p_name, PopupMenu *p_submenu);
	void remove_tool_menu_item(const String &p_name);
	PopupMenu *get_export_as_menu();
	void save_all_scenes();
	void save_scene_if_open(const String &p_scene_path);
	void save_scene_list(const HashSet<String> &p_scene_paths);
	void save_before_run();
	void try_autosave();
	void restart_editor();
	void dim_editor(bool p_dimming);
	bool is_editor_dimmed() const;
	void edit_current() { _edit_current(); };