### 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)

String current_version = VERSION_FULL_CONFIG;
	String template_path = EditorPaths::get_singleton()->get_export_templates_dir().path_join(current_version).path_join(template_file_name);
	if (FileAccess::exists(template_path)) {
		return template_path;
	}
	
	if (err) {
		*err += TTR("No export template found at the expected path:") + "\n" + template_path + "\n";
	}
	return String();
}
bool EditorExportPlatform::exists_export_template(String template_file_name, String *err) const {
	return find_export_template(template_file_name, err) != "";
}
Ref<EditorExportPreset> EditorExportPlatform::create_preset() {
	Ref<EditorExportPreset> preset;
	preset.instantiate();
	preset->platform = Ref<EditorExportPlatform>(this);
	List<ExportOption> options;
	get_export_options(&options);
	for (const ExportOption &E : options) {
		preset->properties.push_back(E.option);
		preset->values[E.option.name] = E.default_value;
		preset->update_visibility[E.option.name] = E.update_visibility;
	}
	return preset;
}
void EditorExportPlatform::_export_find_resources(EditorFileSystemDirectory *p_dir, HashSet<String> &p_paths) {