### 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
Dictionary d = p_data;
	if (!d.has("type")) {
		return false;
	}
	String type = d["type"];
	if (type != "animation_track") {
		return false;
	}
	
	if (get_editor()->is_grouping_tracks()) {
		String base_path = animation->track_get_path(track);
		base_path = base_path.get_slice(":", 0); 
		if (d["group"] != base_path) {
			return false;
		}
	}
	if (p_point.y < get_size().height / 2) {
		dropping_at = -1;
	} else {
		dropping_at = 1;
	}
	const_cast<AnimationTrackEdit *>(this)->queue_redraw();
	return true;
}
void AnimationTrackEdit::drop_data(const Point2 &p_point, const Variant &p_data) {