fix RN mobile api

src/api/routes/users/@me/devices.ts

@@ -38,7 +38,7 @@ router.post(
 	async (req: Request, res: Response) => {
 		const body = req.body as DeviceNotificationSchema;
 		if (body.provider != "webpush")
-			throw new HTTPError("Provider is not supported", 400);
+			return res.sendStatus(204);
 
 		if (!Config.get().webPush.enabled || !vapidConfigured)
 			throw new HTTPError("WebPush notifications are not configured", 400);