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

src/i18n/locale/en.json

@@ -102,6 +102,7 @@
   "components.Discover.PlexWatchlistSlider.emptywatchlist": "Media added to your <PlexWatchlistSupportLink>Plex Watchlist</PlexWatchlistSupportLink> will appear here.",
   "components.Discover.PlexWatchlistSlider.plexwatchlist": "Your Watchlist",
   "components.Discover.RecentlyAddedSlider.recentlyAdded": "Recently Added",
+  "components.Discover.RecentRequestsSlider.unableToConnect": "Unable to connect to {services}. Some information may be unavailable.",
   "components.Discover.StudioSlider.studios": "Studios",
   "components.Discover.TvGenreList.seriesgenres": "Series Genres",
   "components.Discover.TvGenreSlider.tvgenres": "Series Genres",
@@ -515,6 +516,7 @@
   "components.RequestList.sortAdded": "Most Recent",
   "components.RequestList.sortDirection": "Toggle Sort Direction",
   "components.RequestList.sortModified": "Last Modified",
+  "components.RequestList.unableToConnect": "Unable to connect to {services}. Some information may be unavailable.",
   "components.RequestModal.AdvancedRequester.advancedoptions": "Advanced",
   "components.RequestModal.AdvancedRequester.animenote": "* This series is an anime.",
   "components.RequestModal.AdvancedRequester.default": "{name} (Default)",