### Godot version

Master, commit 37d1dfef9d81aade2

### System information

PopOs 22.04, any renderer, Gnome, X11

### Issue description

When exporting a scene to GLTF, the new file does not show up in the filesystem tree, until a new file or folder is created.


https://github.com/godotengine/godot/assets/3624853/ede88d50-f93d-4487-913f-1d87bbd8a7bb

Granted, this is not a very common case. But still, the behavior might seem strange and confusing. It gives the impression that the export did not work.

### Steps to reproduce

- Open any 3D scene and export it to GLTF by going to `Scene > Export to ... > gLTF2.0 Scene`
- Set the file path to your `res://` folder
- The file does not show up
- Create a new folder in the FileSystem tree. This will update the tree and your GLTF file will show up then.

### Minimal reproduction project

No need.
Just export any 3D scene to GLTF.
#ifdef TOOLS_ENABLED
#include "editor_scene_exporter_gltf_plugin.h"
#include "../gltf_document.h"
#include "editor/editor_file_system.h"
#include "editor/editor_node.h"
#include "editor/gui/editor_file_dialog.h"
#include "scene/gui/popup_menu.h"
String SceneExporterGLTFPlugin::get_name() const {