refactor: let pages explicitly handle route parameter behaviour

src/stores/shows.ts

@@ -113,18 +113,10 @@ function useRouteSyncBehaviour(
     if (!oldShow) return
     const newShowId = show?.id ?? null
     const oldShowId = oldShow?.id ?? null
-    if (newShowId === oldShowId && newShowId === null) return
+    if (newShowId === oldShowId) return
 
     if (show && route.name && route.params.showId) {
-      if (Object.values(route.params).length === 1) {
-        // The route only contains the showId, so we can safely navigate to the same route
-        // but with a different show.
-        void router.replace({ name: route.name, params: { ...route.params, showId: newShowId } })
-      } else {
-        // This route contains other parameters that may depend on the currently selected show.
-        // Navigate to the default show detail page instead.
-        void router.push({ name: 'show', params: { showId: newShowId } })
-      }
+      void router.replace({ name: route.name, params: { ...route.params, showId: newShowId } })
     }
   })