### Godot version

 v4.0.beta11.official.91713ced8

### System information

macOS 12.6.1 Monterey, Apple M1 Pro

### Issue description

After reopening scenes with Sprite2D and trying to edit the region of the sprite again the Godot app crashed.

### Steps to reproduce

1. Open scene node_2d in the project files
2. Go to Sprite2D and click on edit region, pop up should show
3. Close the popup and close the scene with X on the tab
4. Reopen the scene, go to Sprite2D and click on Edit region
5. Godot should crash

### Minimal reproduction project

[region_crash.zip](https://github.com/godotengine/godot/files/10400566/region_crash.zip)

default:
				
				filter = CanvasItem::TEXTURE_FILTER_PARENT_NODE;
				break;
		}
	} else if (node_ninepatch) {
		texture = node_ninepatch->get_texture();
		filter = node_ninepatch->get_texture_filter_in_tree();
	} else if (obj_styleBox.is_valid()) {
		texture = obj_styleBox->get_texture();
	}
	
	if (filter == CanvasItem::TEXTURE_FILTER_PARENT_NODE) {
		SubViewport *root = EditorNode::get_singleton()->get_scene_root();
		if (root != nullptr) {
			Viewport::DefaultCanvasItemTextureFilter filter_default = root->get_default_canvas_item_texture_filter();
			
			switch (filter_default) {
				case DEFAULT_CANVAS_ITEM_TEXTURE_FILTER_NEAREST:
					filter = CanvasItem::TEXTURE_FILTER_NEAREST;
					break;
				case DEFAULT_CANVAS_ITEM_TEXTURE_FILTER_LINEAR:
					filter = CanvasItem::TEXTURE_FILTER_LINEAR;
					break;
				case DEFAULT_CANVAS_ITEM_TEXTURE_FILTER_LINEAR_WITH_MIPMAPS:
					filter = CanvasItem::TEXTURE_FILTER_LINEAR_WITH_MIPMAPS;
					break;
				case DEFAULT_CANVAS_ITEM_TEXTURE_FILTER_NEAREST_WITH_MIPMAPS:
				default:
					filter = CanvasItem::TEXTURE_FILTER_NEAREST_WITH_MIPMAPS;