### Godot version

v4.0 rc6

### System information

Windows 10

### Issue description

When using a ViewportTexture from a SubViewport on a TextureRect, it throws errors after running the scene once and then switching scenes in the editor.
![Pasted image 20230227212626](https://user-images.githubusercontent.com/44676282/221680047-984fa03e-33d1-4856-9a7f-1700b28423cf.png)


### Steps to reproduce

Run the canvas-scene once.
Switch to another scene in the editor.
Switch back to the canvas-scene

### Minimal reproduction project

[ViewportTextureError.zip](https://github.com/godotengine/godot/files/10844099/ViewportTextureError.zip)

static String generate_scene_unique_id();
	void set_scene_unique_id(const String &p_id);
	String get_scene_unique_id() const;
	virtual Ref<Resource> duplicate(bool p_subresources = false) const;
	Ref<Resource> duplicate_for_local_scene(Node *p_for_scene, HashMap<Ref<Resource>, Ref<Resource>> &remap_cache);
	void configure_for_local_scene(Node *p_for_scene, HashMap<Ref<Resource>, Ref<Resource>> &remap_cache);
	void set_local_to_scene(bool p_enable);
	bool is_local_to_scene() const;
	virtual void setup_local_to_scene();
	Node *get_local_scene() const;
#ifdef TOOLS_ENABLED
	uint32_t hash_edited_version() const;
	virtual void set_last_modified_time(uint64_t p_time) { last_modified_time = p_time; }
	uint64_t get_last_modified_time() const { return last_modified_time; }
	virtual void set_import_last_modified_time(uint64_t p_time) { import_last_modified_time = p_time; }
	uint64_t get_import_last_modified_time() const { return import_last_modified_time; }
	void set_import_path(const String &p_path) { import_path = p_path; }
	String get_import_path() const { return import_path; }
#endif
	void set_as_translation_remapped(bool p_remapped);
	virtual RID get_rid() const; 
#ifdef TOOLS_ENABLED
	
	void set_id_for_path(const String &p_path, const String &p_id);
	String get_id_for_path(const String &p_path) const;
#endif
	Resource();
	~Resource();
};
class ResourceCache {