fix(portals): fifth review round on the cinematic details

- Stalker movie and series menu launches in MPV/VLC close the title's
  own running external session first through the new shared
  replaceOwnedExternalSession(), cancelling when teardown is not
  confirmed or the selection moved on.
- The reset-progress row is disabled while an external player owns the
  position, on the shared and the Xtream movie menus.
- Every ISO comma-bearing country name stays whole in provider lists.
- The dashboard hero spec competes a favorite movie for a slot so the
  movie-title case is actually exercised.

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

libs/workspace/dashboard/feature/src/lib/rails/dashboard-hero-slides.presenter.spec.ts

@@ -231,10 +231,13 @@ describe('DashboardHeroSlidesPresenter', () => {
     });
 
     it('drops a season marker from a series title and leaves movies and live titles alone', () => {
-        recentItems.set([
-            { ...series, title: 'Big Pharma (1 сезон)' },
-            { ...watchedMovie, title: 'Film Season 2' },
+        // The rotation holds four slides: only the series, the live channel
+        // and a favorite movie compete here (the finished film never does).
+        recentItems.set([{ ...series, title: 'Big Pharma (1 сезон)' }]);
+        favorites.set([
+            { ...favoriteFilm, id: 9, type: 'movie', title: 'Film Season 2' },
         ]);
+        addedItems.set([]);
         candidates.set([
             { origin: 'favorite', item: { ...channel, title: 'Sport S01' } },
         ]);