test: fix mock test by increasing delay

Author: Vinzent03

packages/supabase/test/mock_test.dart

@@ -165,7 +165,7 @@ void main() {
           webSocket!.add(replyString);
 
           // Send an insert event
-          await Future.delayed(Duration(milliseconds: 10));
+          await Future.delayed(Duration(milliseconds: 100));
           final insertString = jsonEncode({
             'topic': topic,
             'event': 'postgres_changes',

packages/supabase_flutter/lib/src/supabase_auth.dart

@@ -119,6 +119,9 @@ class SupabaseAuth with WidgetsBindingObserver {
       case AppLifecycleState.detached:
       case AppLifecycleState.inactive:
       case AppLifecycleState.paused:
+        // Realtime channels are kept alive in the background for some amount
+        // of time after the app is paused. If we stop refreshing the token
+        // here, the channels will be closed.
         if (Supabase.instance.client.realtime.getChannels().isEmpty) {
           Supabase.instance.client.auth.stopAutoRefresh();
         }