fix: boost control is a switch; MutationQueue keeps one enqueue per kind (M464 #4998)

The ListenBrainz settings test finds the page's one checkbox, and the
boost control is a toggle anyway. detekt counts MutationQueue's enqueue
functions; suppressed as the replayer's dispatchers already are.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

android/app/src/main/java/com/fabledsword/minstrel/cache/mutations/MutationQueue.kt

@@ -91,6 +91,7 @@ data class RequestCreatePayload(
  * This matches `feedback_offline_first_for_server_writes` — writes
  * never go fire-and-forget.
  */
+@Suppress("TooManyFunctions") // one enqueue per mutation kind, like the replayer's dispatchers
 @Singleton
 class MutationQueue @Inject constructor(
     private val dao: CachedMutationDao,