fix(web): end selection after click when choosing thumbnail, and noti…

…fy (immich-app#15373)

fix(web): Change viewMode state after updateThumbnail

Fixes immich-app#14692

viewMode state was being changed before updateThumbnail which caused
AssetGrid.handleSelectAssets() to continue, instead of returning.

Also added notification to notify user that the album cover was
updated.

web/src/routes/(user)/albums/[albumId=id]/[[photos=photos]]/[[assetId=id]]/+page.svelte

@@ -357,10 +357,10 @@
       return;
     }
 
+    await updateThumbnail(assetId);
+
     viewMode = AlbumPageViewMode.VIEW;
     assetInteraction.clearMultiselect();
-
-    await updateThumbnail(assetId);
   };
 
   const updateThumbnailUsingCurrentSelection = async () => {
@@ -379,6 +379,10 @@
           albumThumbnailAssetId: assetId,
         },
       });
+      notificationController.show({
+        type: NotificationType.Info,
+        message: $t('album_cover_updated'),
+      });
     } catch (error) {
       handleError(error, $t('errors.unable_to_update_album_cover'));
     }