### 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.
update_obj = true;
				} break;
				case Animation::TYPE_BLEND_SHAPE:
				case Animation::TYPE_VALUE: {
					if (name == "value") {
						Variant value = p_value;
						if (value.get_type() == Variant::NODE_PATH) {
							_fix_node_path(value, base_map[track]);
						}
						if (!setting) {
							setting = true;
							undo_redo->create_action(TTR("Animation Multi Change Keyframe Value"), UndoRedo::MERGE_ENDS);
						}
						Variant prev = animation->track_get_key_value(track, key);
						undo_redo->add_do_method(animation.ptr(), "track_set_key_value", track, key, value);
						undo_redo->add_undo_method(animation.ptr(), "track_set_key_value", track, key, prev);
						update_obj = true;
					}
				} break;
				case Animation::TYPE_METHOD: {
					Dictionary d_old = animation->track_get_key_value(track, key);
					Dictionary d_new = d_old.duplicate();
					bool mergeable = false;
					if (name == "name") {
						d_new["method"] = p_value;
					} else if (name == "arg_count") {
						Vector<Variant> args = d_old["args"];
						args.resize(p_value);
						d_new["args"] = args;
						change_notify_deserved = true;