Fix crash in feed loading by delegating loadFeedVideos

The `loadFeedVideos` method was missing from the `Application` class in `js/app.js`, but was being called by `loadVideos` inside the feed coordinator (which is bound to the application instance). This caused a `TypeError: this.loadFeedVideos is not a function` at runtime.

This change adds the missing delegation method to `Application` in `js/app.js`, forwarding the call to `this._feed.loadFeedVideos`.

Co-authored-by: PR0M3TH3AN <[email protected]>

js/app.js

@@ -3969,6 +3969,11 @@ class Application {
     return this._feed.checkRelayHealthWarning(...args);
   }
 
+  async loadFeedVideos(...args) {
+    this._initCoordinators();
+    return this._feed.loadFeedVideos(...args);
+  }
+
   /**
    * Subscribe to videos (older + new) and render them as they come in.
    */