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/ui/playback/src/lib/vod-details/vod-details-hero.state.ts

@@ -114,6 +114,9 @@ export function createVodDetailsHeroState(deps: VodDetailsHeroStateDeps) {
                 hasPlaybackPosition: deps.hasPlaybackPosition(),
                 hasStoredProgress:
                     (deps.playbackPosition() ?? 0) > 0 || deps.isWatched(),
+                // Inline playback collapses the hero; only an external
+                // player can still own the row while the menu is reachable.
+                playbackActive: deps.externalState() !== 'idle',
             })
         ),
     };

libs/ui/playback/src/lib/vod-details/vod-details-presentation.ts

@@ -164,6 +164,8 @@ export function buildVodMenuSections(input: {
     externalPlayerHint: 'MPV' | 'VLC';
     hasPlaybackPosition: boolean;
     hasStoredProgress: boolean;
+    /** An external player owns the row: its next tick would undo a reset. */
+    playbackActive: boolean;
 }): VodMoreMenuSection[] {
     const sourceRows: VodMoreMenuSection['items'][number][] = [];
     if (input.externalPlayerAvailable) {
@@ -189,6 +191,7 @@ export function buildVodMenuSections(input: {
             id: VOD_DETAILS_MENU_ACTION.ResetProgress,
             labelKey: 'PORTALS.DETAIL.RESET_PROGRESS',
             icon: 'history_toggle_off',
+            disabled: input.playbackActive,
             testId: 'vod-menu-reset-progress',
         });
     }