[bugfix]: Handle top-level songs for Jellyfin (#553)

* [bugfix]: Handle top-level songs for Jellyfin

If a song is at the top level of a music folder, Jellyfin will not
group that into an album (See https://jellyfin.org/docs/general/server/media/music/).

This PR introduces a few changes:
- Gives tracks with no album ID a special route (`/dummy/${id}`)
- Gives a new route for dummy albums, warning about the error. This is designed to look _like_ the album detail page

* `are are` > `are`

* revert name changes

src/renderer/router/app-router.tsx

@@ -55,6 +55,10 @@ const AlbumDetailRoute = lazy(
     () => import('/@/renderer/features/albums/routes/album-detail-route'),
 );
 
+const DummyAlbumDetailRoute = lazy(
+    () => import('/@/renderer/features/albums/routes/dummy-album-detail-route'),
+);
+
 const GenreListRoute = lazy(() => import('/@/renderer/features/genres/routes/genre-list-route'));
 
 const SettingsRoute = lazy(() => import('/@/renderer/features/settings/routes/settings-route'));
@@ -144,6 +148,11 @@ export const AppRouter = () => {
                                     errorElement={<RouteErrorBoundary />}
                                     path={AppRoute.LIBRARY_ALBUMS_DETAIL}
                                 />
+                                <Route
+                                    element={<DummyAlbumDetailRoute />}
+                                    errorElement={<RouteErrorBoundary />}
+                                    path={AppRoute.FAKE_LIBRARY_ALBUM_DETAILS}
+                                />
                                 <Route
                                     element={<SongListRoute />}
                                     errorElement={<RouteErrorBoundary />}

src/renderer/router/routes.ts

@@ -1,6 +1,7 @@
 export enum AppRoute {
     ACTION_REQUIRED = '/action-required',
     EXPLORE = '/explore',
+    FAKE_LIBRARY_ALBUM_DETAILS = '/library/albums/dummy/:albumId',
     HOME = '/',
     LIBRARY_ALBUMS = '/library/albums',
     LIBRARY_ALBUMS_DETAIL = '/library/albums/:albumId',