### 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)

EditorProgress ep("savezip", TTR("Packing"), 102, true);
	Ref<FileAccess> io_fa;
	zlib_filefunc_def io = zipio_create_io(&io_fa);
	zipFile zip = zipOpen2(p_path.utf8().get_data(), APPEND_STATUS_CREATE, nullptr, &io);
	ZipData zd;
	zd.ep = &ep;
	zd.zip = zip;
	Error err = export_project_files(p_preset, p_debug, _save_zip_file, &zd);
	if (err != OK && err != ERR_SKIP) {
		add_message(EXPORT_MESSAGE_ERROR, TTR("Save ZIP"), TTR("Failed to export project files."));
	}
	zipClose(zip, nullptr);
	return OK;
}
Error EditorExportPlatform::export_pack(const Ref<EditorExportPreset> &p_preset, bool p_debug, const String &p_path, int p_flags) {
	ExportNotifier notifier(*this, p_preset, p_debug, p_path, p_flags);
	return save_pack(p_preset, p_debug, p_path);
}
Error EditorExportPlatform::export_zip(const Ref<EditorExportPreset> &p_preset, bool p_debug, const String &p_path, int p_flags) {
	ExportNotifier notifier(*this, p_preset, p_debug, p_path, p_flags);
	return save_zip(p_preset, p_debug, p_path);
}
void EditorExportPlatform::gen_export_flags(Vector<String> &r_flags, int p_flags) {