### 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
EditorFileDialog *file = nullptr;
	ExportTemplateManager *export_template_manager = nullptr;
	EditorFeatureProfileManager *feature_profile_manager = nullptr;
	EditorBuildProfileManager *build_profile_manager = nullptr;
	EditorFileDialog *file_templates = nullptr;
	EditorFileDialog *file_export_lib = nullptr;
	EditorFileDialog *file_script = nullptr;
	EditorFileDialog *file_android_build_source = nullptr;
	CheckBox *file_export_lib_merge = nullptr;
	CheckBox *file_export_lib_apply_xforms = nullptr;
	String current_path;
	MenuButton *update_spinner = nullptr;
	HBoxContainer *main_editor_button_hb = nullptr;
	Vector<Button *> main_editor_buttons;
	Vector<EditorPlugin *> editor_table;
	AudioStreamPreviewGenerator *audio_preview_gen = nullptr;
	ProgressDialog *progress_dialog = nullptr;
	BackgroundProgress *progress_hb = nullptr;
	DependencyErrorDialog *dependency_error = nullptr;
	HashMap<String, HashSet<String>> dependency_errors;
	DependencyEditor *dependency_fixer = nullptr;
	OrphanResourcesDialog *orphan_resources = nullptr;
	ConfirmationDialog *open_imported = nullptr;
	Button *new_inherited_button = nullptr;
	String open_import_request;
	Vector<WindowWrapper *> floating_docks;
	Button *dock_float = nullptr;
	Button *dock_tab_move_left = nullptr;
	Button *dock_tab_move_right = nullptr;
	Control *dock_select = nullptr;