Use the new notification sound. (#4572)

* Use the new notification sound.

* Add a banner informing the user of the new notification sound.

ElementX/Sources/Screens/HomeScreen/HomeScreenModels.swift

@@ -39,6 +39,7 @@ enum HomeScreenViewAction {
     case confirmRecoveryKey
     case resetEncryption
     case skipRecoveryKeyConfirmation
+    case dismissNewSoundBanner
     case updateVisibleItemRange(Range<Int>)
     case globalSearch
     case markRoomAsUnread(roomIdentifier: String)
@@ -92,6 +93,7 @@ struct HomeScreenViewState: BindableState {
     var userAvatarURL: URL?
     
     var securityBannerMode = HomeScreenSecurityBannerMode.none
+    var shouldShowNewSoundBanner = false
     
     var requiresExtraAccountSetup = false
         
@@ -134,6 +136,10 @@ struct HomeScreenViewState: BindableState {
     var shouldShowFilters: Bool {
         !bindings.isSearchFieldFocused && roomListMode == .rooms
     }
+    
+    var shouldShowBanner: Bool {
+        securityBannerMode.isShown || shouldShowNewSoundBanner
+    }
 }
 
 struct HomeScreenViewStateBindings {