fix: correct RedisQueue disposal ordering to prevent ObjectDisposedException during shutdown

src/Foundatio.Redis/Queues/RedisQueue.cs

@@ -809,7 +809,10 @@
     // IConnectionMultiplexer supports IAsyncDisposable since SE.Redis 2.6.66.
     public override void Dispose()
     {
-        base.Dispose();
+        if (IsDisposed)
+            return;
+
+        SignalDispose();
         _connectionMultiplexer.ConnectionRestored -= ConnectionMultiplexerOnConnectionRestored;
 
         if (_isSubscribed)
@@ -853,6 +856,7 @@
         }
 
         WaitForMaintenanceTask();
+        base.Dispose();
         _cache.Dispose();
     }
 

tests/Foundatio.Redis.Tests/Queues/RedisQueueTests.cs

@@ -128,6 +128,12 @@ public override Task DequeueAsync_WithDispose_AutoAbandonsEntryAsync()
         return base.DequeueAsync_WithDispose_AutoAbandonsEntryAsync();
     }
 
+    [Fact]
+    public override Task Dispose_WithMaintenanceRunning_DoesNotThrowObjectDisposedException()
+    {
+        return base.Dispose_WithMaintenanceRunning_DoesNotThrowObjectDisposedException();
+    }
+
     [Fact]
     public override Task DequeueWaitWillGetSignaledAsync()
     {