[web] Use named route for the "now playing" page

Switching to named routes in order to reduce future maintenance.

web-src/src/router/index.js

@@ -55,11 +55,6 @@ export const router = createRouter({
       name: 'audiobook',
       path: '/audiobook/:id'
     },
-    {
-      path: '/now-playing',
-      name: 'Now playing',
-      component: PageNowPlaying
-    },
     {
       path: '/music',
       redirect: '/music/browse'
@@ -148,6 +143,11 @@ export const router = createRouter({
       component: PageComposerTracks,
       meta: { show_progress: true, has_index: true }
     },
+    {
+      component: PageNowPlaying,
+      name: 'now-playing',
+      path: '/now-playing',
+    },
     {
       component: PagePodcast,
       meta: { show_progress: true },