### Godot version

4.0.stable

### System information

Windows 10, Forward+, GTX 1070 driver 528.49

### Issue description

When trying to edit the handle mode of a bezier cruve key from the inspector tab, the mode doesn't change. It works fine when right clicking on the key and setting the handle mode from here though. 

https://user-images.githubusercontent.com/24484962/222379540-29d71b6d-ff0c-4a21-9905-9750d0581fda.mp4



### Steps to reproduce

On an animation track using a bezier curve, select a key and try to change the handle mode from the inspector tab

### Minimal reproduction project

N/A
timeline->update_play_position();
	_redraw_tracks();
	for (int i = 0; i < track_edits.size(); i++) {
		track_edits[i]->update_play_position();
	}
	_redraw_groups();
	bezier_edit->queue_redraw();
	bezier_edit->update_play_position();
}
int AnimationTrackEditor::_get_track_selected() {
	for (int i = 0; i < track_edits.size(); i++) {
		if (track_edits[i]->has_focus()) {
			return i;
		}
	}
	return -1;
}
void AnimationTrackEditor::_insert_key_from_track(float p_ofs, int p_track) {