### 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
if (key_edit) {
		
		if (InspectorDock::get_inspector_singleton()->get_edited_object() == key_edit) {
			EditorNode::get_singleton()->push_item(nullptr);
		}
		
		memdelete(key_edit);
		key_edit = nullptr;
	}
	if (multi_key_edit) {
		if (InspectorDock::get_inspector_singleton()->get_edited_object() == multi_key_edit) {
			EditorNode::get_singleton()->push_item(nullptr);
		}
		memdelete(multi_key_edit);
		multi_key_edit = nullptr;
	}
}
void AnimationTrackEditor::_clear_selection(bool p_update) {
	selection.clear();
	if (p_update) {
		_redraw_tracks();
	}
	_clear_key_edit();
}
void AnimationTrackEditor::_update_key_edit() {