### 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.
return animation;
}
void AnimationTrackEditor::_root_removed() {
	root = nullptr;
}
void AnimationTrackEditor::set_root(Node *p_root) {
	if (root) {
		root->disconnect("tree_exiting", callable_mp(this, &AnimationTrackEditor::_root_removed));
	}
	root = p_root;
	if (root) {
		root->connect("tree_exiting", callable_mp(this, &AnimationTrackEditor::_root_removed), CONNECT_ONE_SHOT);
	}
	_update_tracks();
}
Node *AnimationTrackEditor::get_root() const {