Fix freezing chats when were rendering wrong thumb

src/lib/appManagers/appDownloadManager.ts

@@ -271,9 +271,9 @@ export class AppDownloadManager {
   }
 
   public getCacheContext(media: MyPhoto | MyDocument, thumbSize: string = 'full'): ThumbCache {
-    if(media._ === 'photo' && thumbSize !== 'i') {
+    /* if(media._ === 'photo' && thumbSize !== 'i') {
       thumbSize = 'full';
-    }
+    } */
 
     const cache = this.thumbsCache[media._][media.id] ?? (this.thumbsCache[media._][media.id] = {});
     return cache[thumbSize] ?? (cache[thumbSize] = {downloaded: 0, url: ''});