### Godot version

4.0.beta10 mono and standard

### System information

Windows 10 64bits

### Issue description

When exporting a project, Godot fails to bundle the required DLLs from the GDExtension to the export folder:

```
editor/export/editor_export_plugin.h:123 - Required virtual method EditorExportPlugin::_get_name must be overridden before calling.
  No suitable library found for GDExtension: res://webrtc/webrtc.gdextension. Possible feature flags for your platform: pc, s3tc, windows, x86_64, template, template_debug
```

### Steps to reproduce

Export for Windows with the existing configuration: WebRTC DLLs won't be copied in the export folder

### Minimal reproduction project

[Repro.zip](https://github.com/godotengine/godot/files/10368987/Repro.zip)

bool changed = false;
	if (p_node == p_root || p_node->get_owner() == p_root) {
		if (_export_customize_object(p_node, customize_resources_plugins)) {
			changed = true;
		}
	}
	for (int i = 0; i < p_node->get_child_count(); i++) {
		if (_export_customize_scene_resources(p_root, p_node->get_child(i), customize_resources_plugins)) {
			changed = true;
		}
	}
	return changed;
}
String EditorExportPlatform::_export_customize(const String &p_path, LocalVector<Ref<EditorExportPlugin>> &customize_resources_plugins, LocalVector<Ref<EditorExportPlugin>> &customize_scenes_plugins, HashMap<String, FileExportCache> &export_cache, const String &export_base_path, bool p_force_save) {
	if (!p_force_save && customize_resources_plugins.is_empty() && customize_scenes_plugins.is_empty()) {
		return p_path; 
	}
	
	if (export_cache.has(p_path)) {
		FileExportCache &fec = export_cache[p_path];
		if (fec.saved_path.is_empty() || FileAccess::exists(fec.saved_path)) {
			
			uint64_t mod_time = FileAccess::get_modified_time(p_path);
			if (fec.source_modified_time == mod_time) {
				
				fec.used = true;
				return fec.saved_path.is_empty() ? p_path : fec.saved_path;
			}
			String md5 = FileAccess::get_md5(p_path);
			if (FileAccess::exists(p_path + ".import")) {