### 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
VBoxContainer *optimize_vb = memnew(VBoxContainer);
	optimize_dialog->add_child(optimize_vb);
	optimize_velocity_error = memnew(SpinBox);
	optimize_velocity_error->set_max(1.0);
	optimize_velocity_error->set_min(0.001);
	optimize_velocity_error->set_step(0.001);
	optimize_velocity_error->set_value(0.01);
	optimize_vb->add_margin_child(TTR("Max. Velocity Error:"), optimize_velocity_error);
	optimize_angular_error = memnew(SpinBox);
	optimize_angular_error->set_max(1.0);
	optimize_angular_error->set_min(0.001);
	optimize_angular_error->set_step(0.001);
	optimize_angular_error->set_value(0.01);
	optimize_vb->add_margin_child(TTR("Max. Angular Error:"), optimize_angular_error);
	optimize_precision_error = memnew(SpinBox);
	optimize_precision_error->set_max(6);
	optimize_precision_error->set_min(1);
	optimize_precision_error->set_step(1);
	optimize_precision_error->set_value(3);
	optimize_vb->add_margin_child(TTR("Max. Precision Error:"), optimize_precision_error);
	optimize_dialog->set_ok_button_text(TTR("Optimize"));
	optimize_dialog->connect("confirmed", callable_mp(this, &AnimationTrackEditor::_edit_menu_pressed).bind(EDIT_OPTIMIZE_ANIMATION_CONFIRM));
	
	cleanup_dialog = memnew(ConfirmationDialog);
	add_child(cleanup_dialog);
	VBoxContainer *cleanup_vb = memnew(VBoxContainer);
	cleanup_dialog->add_child(cleanup_vb);
	cleanup_keys = memnew(CheckBox);
	cleanup_keys->set_text(TTR("Remove invalid keys"));
	cleanup_keys->set_pressed(true);