### 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.
float zv = zoom->get_max() - zoom->get_value();
	if (zv < 1) {
		zv = 1.0 - zv;
		return Math::pow(1.0f + zv, 8.0f) * 100;
	} else {
		return 1.0 / Math::pow(zv, 8.0f) * 100;
	}
}
void AnimationTimelineEdit::_anim_length_changed(double p_new_len) {
	if (editing) {
		return;
	}
	p_new_len = MAX(0.0001, p_new_len);
	if (use_fps && animation->get_step() > 0) {
		p_new_len *= animation->get_step();
	}
	editing = true;
	EditorUndoRedoManager *undo_redo = EditorUndoRedoManager::get_singleton();
	undo_redo->create_action(TTR("Change Animation Length"), UndoRedo::MERGE_ENDS);
	undo_redo->add_do_method(animation.ptr(), "set_length", p_new_len);
	undo_redo->add_undo_method(animation.ptr(), "set_length", animation->get_length());
	undo_redo->commit_action();
	editing = false;
	queue_redraw();
	emit_signal(SNAME("length_changed"), p_new_len);
}
void AnimationTimelineEdit::_anim_loop_pressed() {