### Godot version

4.0.rc

### System information

Any

### Issue description

If the RESET animation is generated at the same time as the Bezier track is generated, the bezier edit button will not be active.

![image](https://user-images.githubusercontent.com/61938263/218256176-88b1b196-7b6b-4404-84ad-e8694f23bb1b.png)

Also, if you delete a track in the Bezier Editor, or in undo redo, it will not update correctly.

### Steps to reproduce

![image](https://user-images.githubusercontent.com/61938263/218256230-4b0219d5-87e4-453a-8294-59f8feb0cfd5.png)


### Minimal reproduction project

N/A
StringName anim_name = p_value;
						if (!setting) {
							setting = true;
							undo_redo->create_action(TTR("Animation Multi Change Keyframe Value"), UndoRedo::MERGE_ENDS);
						}
						StringName prev = animation->animation_track_get_key_animation(track, key);
						undo_redo->add_do_method(animation.ptr(), "animation_track_set_key_animation", track, key, anim_name);
						undo_redo->add_undo_method(animation.ptr(), "animation_track_set_key_animation", track, key, prev);
						update_obj = true;
					}
				} break;
			}
		}
	}
	EditorUndoRedoManager *undo_redo = EditorUndoRedoManager::get_singleton();
	if (setting) {
		if (update_obj) {
			undo_redo->add_do_method(this, "_update_obj", animation);
			undo_redo->add_undo_method(this, "_update_obj", animation);
		}
		undo_redo->commit_action();
		setting = false;
		if (change_notify_deserved) {
			notify_change();
		}
		return true;
	}
	return false;
}
bool AnimationMultiTrackKeyEdit::_get(const StringName &p_name, Variant &r_ret) const {