### Godot version

4.0beta17

### System information

Linux Mint 21.1

### Issue description

When editing animations for the **frame** property of **Sprite2D**, the preview image does not respect the **region_rect** specified in the Sprite2D's properties.

Godot 4.0 (tested with alpha1 to beta17)
![Screenshot from 2023-02-05 21-19-29](https://user-images.githubusercontent.com/2348534/216868394-45a9dc42-ce4b-4b11-82cb-4491aea46d9b.png)

Godot 3.5
![Screenshot from 2023-02-05 21-19-43](https://user-images.githubusercontent.com/2348534/216868543-cff6eb60-a431-4138-8fa6-5c30a54de0e1.png)

As can be seen in the second screenshot, the region rect is applied to the key preview image in Godot 3.5, but is ignored in Godot 4.0.


### Steps to reproduce

Steps:

1. Set a region rect on a Sprite2D node
2. Add Sprite2D.frame as a track to an AnimationPlayer
3. Insert key
4. Key preview does not take region rect into account

### Minimal reproduction project

[MRP.zip](https://github.com/godotengine/godot/files/10637055/MRP.zip)

return false;
}
void AnimationTrackEditTypeAnimation::draw_key(int p_index, float p_pixels_sec, int p_x, bool p_selected, int p_clip_left, int p_clip_right) {
	Object *object = ObjectDB::get_instance(id);
	if (!object) {
		AnimationTrackEdit::draw_key(p_index, p_pixels_sec, p_x, p_selected, p_clip_left, p_clip_right);
		return;
	}
	AnimationPlayer *ap = Object::cast_to<AnimationPlayer>(object);
	if (!ap) {
		AnimationTrackEdit::draw_key(p_index, p_pixels_sec, p_x, p_selected, p_clip_left, p_clip_right);
		return;
	}
	String anim = get_animation()->animation_track_get_key_animation(get_track(), p_index);
	if (anim != "[stop]" && ap->has_animation(anim)) {
		float len = ap->get_animation(anim)->get_length();
		if (get_animation()->track_get_key_count(get_track()) > p_index + 1) {
			len = MIN(len, get_animation()->track_get_key_time(get_track(), p_index + 1) - get_animation()->track_get_key_time(get_track(), p_index));
		}
		int pixel_len = len * p_pixels_sec;
		int pixel_begin = p_x;
		int pixel_end = p_x + pixel_len;
		if (pixel_end < p_clip_left) {
			return;
		}
		if (pixel_begin > p_clip_right) {
			return;