### 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
case EDIT_SCALE_FROM_CURSOR: {
			scale_dialog->popup_centered(Size2(200, 100) * EDSCALE);
		} break;
		case EDIT_SCALE_CONFIRM: {
			if (selection.is_empty()) {
				return;
			}
			float from_t = 1e20;
			float to_t = -1e20;
			float len = -1e20;
			float pivot = 0;
			for (const KeyValue<SelectedKey, KeyInfo> &E : selection) {
				float t = animation->track_get_key_time(E.key.track, E.key.key);
				if (t < from_t) {
					from_t = t;
				}
				if (t > to_t) {
					to_t = t;
				}
			}
			len = to_t - from_t;
			if (last_menu_track_opt == EDIT_SCALE_FROM_CURSOR) {
				pivot = timeline->get_play_position();
			} else {
				pivot = from_t;
			}
			float s = scale->get_value();
			ERR_FAIL_COND_MSG(s == 0, "Can't scale to 0.");
			EditorUndoRedoManager *undo_redo = EditorUndoRedoManager::get_singleton();
			undo_redo->create_action(TTR("Animation Scale Keys"));