fix(playback): restart the Up next collapse delay for a new episode

- A card that stays mounted while its next episode changes gives the new
  item the full delay instead of the previous item's leftover.
- The setting description no longer promises credit-based timing: no
  current series path supplies chapters yet.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

libs/workspace/shell/util/src/lib/settings-search/settings-search-entries-playback.ts

@@ -57,7 +57,7 @@ export const PLAYBACK_SETTINGS_SEARCH_ENTRIES: readonly SettingsSearchEntry[] =
             section: 'playback',
             labelKey: 'SETTINGS.PLAYER_UP_NEXT_CARD',
             descriptionKey: 'SETTINGS.PLAYER_UP_NEXT_CARD_DESCRIPTION',
-            keywords: ['up next', 'next episode', 'credits', 'popup'],
+            keywords: ['up next', 'next episode', 'popup'],
             fallbackId: 'video-player',
         },
         {