### Godot version

4.0.dev

### System information

win11，core i7 13700,  GTX4090

### Issue description

Just look at this gif.

![screenshots](https://user-images.githubusercontent.com/1620585/225354749-6ea17059-95b2-45e0-9765-8505e92726eb.gif)

It seems that it was block by Static Type Checking.

![image](https://user-images.githubusercontent.com/1620585/225362874-507ff0ec-c6d8-4a25-9a16-89db1885ad02.png)

If it's right.

Why it doesn't just disable other option except for String and StringName?

### Steps to reproduce

1. first select string type
2. input a text
3. change type
4. change back to string  -- it don't work
5. change to stringname -- it works
6. change back to string -- it works

### Minimal reproduction project

I think it don't need reproduction project.
#include "animation_track_editor.h"
#include "animation_track_editor_plugins.h"
#include "core/input/input.h"
#include "editor/animation_bezier_editor.h"
#include "editor/editor_node.h"
#include "editor/editor_scale.h"
#include "editor/editor_settings.h"
#include "editor/editor_undo_redo_manager.h"
#include "editor/gui/editor_spin_slider.h"
#include "editor/gui/scene_tree_editor.h"
#include "editor/inspector_dock.h"
#include "editor/plugins/animation_player_editor_plugin.h"
#include "scene/animation/animation_player.h"
#include "scene/animation/tween.h"
#include "scene/gui/check_box.h"
#include "scene/gui/grid_container.h"
#include "scene/gui/option_button.h"
#include "scene/gui/panel_container.h"
#include "scene/gui/separator.h"
#include "scene/gui/slider.h"
#include "scene/gui/spin_box.h"
#include "scene/gui/texture_rect.h"
#include "scene/gui/view_panner.h"
#include "scene/main/window.h"
#include "scene/scene_string_names.h"
#include "servers/audio/audio_stream.h"
void AnimationTrackKeyEdit::_bind_methods() {