adds safe area to album to stop from clipping bottom of albums (#1889)

mobile/lib/modules/album/views/album_viewer_page.dart

@@ -278,7 +278,9 @@ class AlbumViewerPage extends HookConsumerWidget {
                     ),
                   ),
                 ),
-                buildImageGrid(album)
+                SliverSafeArea(
+                  sliver: buildImageGrid(album),
+                ),
               ],
             ),
           ),