### 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
ERR_FAIL_INDEX(p_track, animation->get_track_count());
	ERR_FAIL_INDEX(p_key, animation->track_get_key_count(p_track));
	SelectedKey sk;
	sk.key = p_key;
	sk.track = p_track;
	selection.erase(sk);
	_redraw_tracks();
	_update_key_edit();
}
void AnimationTrackEditor::_move_selection_begin() {
	moving_selection = true;
	moving_selection_offset = 0;
}
void AnimationTrackEditor::_move_selection(float p_offset) {
	moving_selection_offset = p_offset;
	_redraw_tracks();
}
struct _AnimMoveRestore {
	int track = 0;
	float time = 0;
	Variant key;
	float transition = 0;
};
void AnimationTrackEditor::_clear_key_edit() {