### 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 (get_edited_scene()) {
		if (current_tab < 2) {
			Node *editor_node = SceneTreeDock::get_singleton()->get_tree_editor()->get_selected();
			editor_node = editor_node == nullptr ? get_edited_scene() : editor_node;
			if (Object::cast_to<CanvasItem>(editor_node)) {
				editor_select(EDITOR_2D);
			} else if (Object::cast_to<Node3D>(editor_node)) {
				editor_select(EDITOR_3D);
			}
		}
	}
	if (p_state.has("scene_tree_offset")) {
		SceneTreeDock::get_singleton()->get_tree_editor()->get_scene_tree()->get_vscroll_bar()->set_value(p_state["scene_tree_offset"]);
	}
	if (p_state.has("property_edit_offset")) {
		InspectorDock::get_inspector_singleton()->set_scroll_offset(p_state["property_edit_offset"]);
	}
	if (p_state.has("node_filter")) {
		SceneTreeDock::get_singleton()->set_filter(p_state["node_filter"]);
	}
	
	EditorDebuggerNode::get_singleton()->update_live_edit_root();
	ScriptEditor::get_singleton()->set_scene_root_script(editor_data.get_scene_root_script(editor_data.get_edited_scene()));
	editor_data.notify_edited_scene_changed();
	emit_signal(SNAME("scene_changed"));
	
	RenderingServer::get_singleton()->sdfgi_reset();
}
bool EditorNode::is_changing_scene() const {