add error handling to updateCache for saved-feeds (#878)

src/state/models/ui/saved-feeds.ts

@@ -78,7 +78,13 @@ export class SavedFeedsModel {
       }
     }
 
+    // early exit if no feeds need to be fetched
+    if (!neededFeedUris.length || neededFeedUris.length === 0) {
+      return
+    }
+
     // fetch the missing models
+    try {
       for (let i = 0; i < neededFeedUris.length; i += 25) {
         const res = await this.rootStore.agent.app.bsky.feed.getFeedGenerators({
           feeds: neededFeedUris.slice(i, 25),
@@ -90,6 +96,10 @@ export class SavedFeedsModel {
           )
         }
       }
+    } catch (error) {
+      console.error('Failed to fetch feed models', error)
+      this.rootStore.log.error('Failed to fetch feed models', error)
+    }
 
     // merge into the cache
     runInAction(() => {