### 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
#include "editor/editor_build_profile.h"
#include "editor/editor_command_palette.h"
#include "editor/editor_data.h"
#include "editor/editor_feature_profile.h"
#include "editor/editor_folding.h"
#include "editor/editor_help.h"
#include "editor/editor_inspector.h"
#include "editor/editor_interface.h"
#include "editor/editor_layouts_dialog.h"
#include "editor/editor_log.h"
#include "editor/editor_native_shader_source_visualizer.h"
#include "editor/editor_paths.h"
#include "editor/editor_plugin.h"
#include "editor/editor_properties.h"
#include "editor/editor_property_name_processor.h"
#include "editor/editor_quick_open.h"
#include "editor/editor_resource_preview.h"
#include "editor/editor_run.h"
#include "editor/editor_run_native.h"
#include "editor/editor_scale.h"
#include "editor/editor_settings.h"
#include "editor/editor_settings_dialog.h"
#include "editor/editor_themes.h"
#include "editor/editor_translation_parser.h"
#include "editor/editor_undo_redo_manager.h"
#include "editor/export/editor_export.h"
#include "editor/export/export_template_manager.h"
#include "editor/export/project_export.h"
#include "editor/fbx_importer_manager.h"
#include "editor/filesystem_dock.h"