test(live-tv): mirror the EPG offset setting in the sidebar spec mock

Master's player reads `resolvedEpgOffsetMinutes` from the settings store; the
new sidebar spec was cloned from the movie-gate harness before that field
landed, so its playing-channel case threw inside the EPG effect.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

libs/playlist/m3u/feature-player/src/lib/video-player/video-player-sidebar.spec.ts

@@ -216,6 +216,7 @@ describe('VideoPlayerComponent — collapsible channels rail', () => {
                         stripCountryPrefix,
                         m3uVodDetails: signal(true),
                         resolvedEpgViewMode: signal('timeline'),
+                        resolvedEpgOffsetMinutes: signal(0),
                         epgUrl: signal<string[]>([]),
                     },
                 },