### 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
ERR_FAIL_COND(p_event.is_null());
	if (p_event->is_pressed()) {
		if (ED_GET_SHORTCUT("animation_editor/duplicate_selection")->matches_event(p_event)) {
			if (!read_only) {
				emit_signal(SNAME("duplicate_request"));
			}
			accept_event();
		}
		if (ED_GET_SHORTCUT("animation_editor/duplicate_selection_transposed")->matches_event(p_event)) {
			if (!read_only) {
				emit_signal(SNAME("duplicate_transpose_request"));
			}
			accept_event();
		}
		if (ED_GET_SHORTCUT("animation_editor/delete_selection")->matches_event(p_event)) {
			if (!read_only) {
				emit_signal(SNAME("delete_request"));
			}
			accept_event();
		}
	}
	Ref<InputEventMouseButton> mb = p_event;
	if (mb.is_valid() && mb->is_pressed() && mb->get_button_index() == MouseButton::LEFT) {
		Point2 pos = mb->get_position();
		if (!read_only) {