Move any visible account settings into AccountSettings. (#6308)

* Remove the now unused setting to disable in-app notifications.

* Move visible account settings into AccountSettings.

Have ignored enableNotifications for now as that will require reworking the NotificationManager.

* Allow different sounds to be selected for each account.

* Move defaultNotificationTone into AccountSettings.

NSE/Sources/NSEUserSession.swift

@@ -11,6 +11,7 @@ import MatrixRustSDK
 
 // sourcery: AutoMockable
 nonisolated protocol NSEUserSessionProtocol {
+    var userSettings: UserSettings { get }
     var inviteAvatarsVisibility: InviteAvatars { get async }
     var mediaPreviewVisibility: MediaPreviews { get async }
     var threadsEnabled: Bool { get }
@@ -59,7 +60,8 @@ final nonisolated class NSEUserSession: NSEUserSessionProtocol {
          appSettings: AppSettings,
          appHooks: AppHooks) async throws {
         userID = credentials.userID
-        userSettings = appSettings.userSettings(for: credentials.userID)
+        userSettings = appHooks.userSessionHook.configure(appSettings.userSettings(for: credentials.userID),
+                                                          forHomeserver: credentials.restorationToken.session.homeserverUrl)
         
         baseClient = try await clientFactory.makeNSEClient(credentials: credentials,
                                                            roomID: roomID,