### 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
for (const KeyValue<int, List<float>> &E : key_ofs_map) {
		int track = E.key;
		for (const float &key_ofs : E.value) {
			int key = animation->track_find_key(track, key_ofs, Animation::FIND_MODE_APPROX);
			ERR_CONTINUE(key == -1);
			String name = p_name;
			if (name == "easing") {
				r_ret = animation->track_get_key_transition(track, key);
				return true;
			}
			switch (animation->track_get_type(track)) {
				case Animation::TYPE_POSITION_3D:
				case Animation::TYPE_ROTATION_3D:
				case Animation::TYPE_SCALE_3D: {
					if (name == "position" || name == "rotation" || name == "scale") {
						r_ret = animation->track_get_key_value(track, key);
						return true;
					}
				} break;
				case Animation::TYPE_BLEND_SHAPE:
				case Animation::TYPE_VALUE: {
					if (name == "value") {
						r_ret = animation->track_get_key_value(track, key);
						return true;
					}
				} break;
				case Animation::TYPE_METHOD: {
					Dictionary d = animation->track_get_key_value(track, key);
					if (name == "name") {
						ERR_FAIL_COND_V(!d.has("method"), false);