Backport pull request #5617 from jellyfin-web/release-10.9.z

Allow VideoStreamCopy for remote source fallback

Original-merge: 40e7dc90079cd3e2065cb9170175091f0e04a823

Merged-by: thornbill <thornbill@users.noreply.github.com>

Backported-by: Joshua M. Boniface <joshua@boniface.me>

src/utils/mediaSource.ts

@@ -6,6 +6,6 @@ import type { MediaSourceInfo } from '@jellyfin/sdk/lib/generated-client';
  * @returns _true_ if the media source is an HLS stream, _false_ otherwise.
  */
 export function isHls(mediaSource: MediaSourceInfo|null|undefined): boolean {
-    const protocol = mediaSource?.TranscodingSubProtocol || mediaSource?.Container;
-    return protocol?.toUpperCase() === 'HLS';
+    return mediaSource?.TranscodingSubProtocol?.toUpperCase() === 'HLS'
+        || mediaSource?.Container?.toUpperCase() === 'HLS';
 }