### 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.
_clear_key_edit();
	if (!animation.is_valid()) {
		return;
	}
	if (selection.size() == 1) {
		key_edit = memnew(AnimationTrackKeyEdit);
		key_edit->animation = animation;
		key_edit->animation_read_only = read_only;
		key_edit->track = selection.front()->key().track;
		key_edit->use_fps = timeline->is_using_fps();
		int key_id = selection.front()->key().key;
		if (key_id >= animation->track_get_key_count(key_edit->track)) {
			_clear_key_edit();
			return; 
		}
		float ofs = animation->track_get_key_time(key_edit->track, key_id);
		key_edit->key_ofs = ofs;
		key_edit->root_path = root;
		NodePath np;
		key_edit->hint = _find_hint_for_track(key_edit->track, np);
		key_edit->base = np;
		EditorNode::get_singleton()->push_item(key_edit);
	} else if (selection.size() > 1) {
		multi_key_edit = memnew(AnimationMultiTrackKeyEdit);