### 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.
to_v = a + fmod(2.0 * to_diff, Math_TAU) - to_diff;
						}
						Variant delta_v = Animation::subtract_variant(to_v, from_v);
						double duration = to_t - from_t;
						double fixed_duration = duration - UNIT_EPSILON; 
						for (double delta_t = dur_step; delta_t < fixed_duration; delta_t += dur_step) {
							Pair<real_t, Variant> keydata;
							keydata.first = from_t + delta_t;
							keydata.second = Tween::interpolate_variant(from_v, delta_v, delta_t, duration, transition_type, ease_type);
							insert_queue_new.append(keydata);
						}
					}
				}
				
				for (int i = 0; i < insert_queue_new.size(); i++) {
					undo_redo->add_do_method(animation.ptr(), "track_insert_key", track, insert_queue_new[i].first, insert_queue_new[i].second);
					undo_redo->add_undo_method(animation.ptr(), "track_remove_key_at_time", track, insert_queue_new[i].first);
				}
				++E;
			}
			undo_redo->add_do_method(this, "_clear_selection_for_anim", animation);
			undo_redo->add_undo_method(this, "_clear_selection_for_anim", animation);
			undo_redo->add_do_method(this, "_redraw_tracks");
			undo_redo->add_undo_method(this, "_redraw_tracks");
			undo_redo->commit_action();
			_update_key_edit();
		} break;
		case EDIT_DUPLICATE_SELECTION: {
			if (bezier_edit->is_visible()) {
				bezier_edit->duplicate_selection();