### 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
tc.interp_type = animation->track_get_interpolation_type(idx);
						if (tc.track_type == Animation::TYPE_VALUE) {
							tc.update_mode = animation->value_track_get_update_mode(idx);
						}
						if (tc.track_type == Animation::TYPE_AUDIO) {
							tc.use_blend = animation->audio_track_is_use_blend(idx);
						}
						tc.loop_wrap = animation->track_get_interpolation_loop_wrap(idx);
						tc.enabled = animation->track_is_enabled(idx);
						for (int i = 0; i < animation->track_get_key_count(idx); i++) {
							TrackClipboard::Key k;
							k.time = animation->track_get_key_time(idx, i);
							k.value = animation->track_get_key_value(idx, i);
							k.transition = animation->track_get_key_transition(idx, i);
							tc.keys.push_back(k);
						}
						track_clipboard.push_back(tc);
					}
					it = it->get_next();
				}
			}
		} break;
		case EDIT_PASTE_TRACKS: {
			if (track_clipboard.size() == 0) {
				EditorNode::get_singleton()->show_warning(TTR("Clipboard is empty!"));
				break;
			}
			int base_track = animation->get_track_count();
			EditorUndoRedoManager *undo_redo = EditorUndoRedoManager::get_singleton();
			undo_redo->create_action(TTR("Paste Tracks"));