fix(servarr): add timeout to Radarr/Sonarr API requests to prevent infinite loading (#2375)

* fix(servarr): add timeout to Radarr/Sonarr API requests to prevent infinite loading

Adds a 5-second timeout to all Radarr/Sonarr API requests and displays a warning banner when
services are unreachable. This prevents the Recent Requests section and request list pages from
hanging indefinitely when a configured service has connection issues.

fix #2374

* fix(requests): only show service error banner to users with advanced permissions

server/api/servarr/base.ts

@@ -92,11 +92,13 @@ class ServarrBase<QueueItemAppendT> extends ExternalAPI {
     apiKey,
     cacheName,
     apiName,
+    timeout = 5000,
   }: {
     url: string;
     apiKey: string;
     cacheName: AvailableCacheIds;
     apiName: string;
+    timeout?: number;
   }) {
     super(
       url,
@@ -105,6 +107,7 @@ class ServarrBase<QueueItemAppendT> extends ExternalAPI {
       },
       {
         nodeCache: cacheManager.getCache(cacheName).data,
+        timeout,
       }
     );