Download not one but all authenticated users at start

MastodonSDK/Sources/MastodonCore/Service/API/APIService+HomeTimeline.swift

@@ -47,12 +47,17 @@ extension APIService {
         // FIXME: This is a dirty hack to make the performance-stuff work.
         // Problem is, that we don't persist the user on disk anymore. So we have to fetch
         // it when we need it to display on the home timeline.
-        _ = try await authenticatedUserInfo(authenticationBox: authenticationBox).value
+        for authentication in AuthenticationServiceProvider.shared.authentications {
+            _ = try await accountInfo(domain: authentication.domain,
+                                       userID: authentication.userID,
+                                       authorization: Mastodon.API.OAuth.Authorization(accessToken: authentication.userAccessToken)).value
+        }
+
         NotificationCenter.default.post(name: .userFetched, object: nil)
         
         try await managedObjectContext.performChanges {
             guard let me = authenticationBox.authentication.user(in: managedObjectContext) else {
-                assertionFailure()  
+                assertionFailure()
                 return
             }