fix for visualization flag not being read at the correct time

This was causing the object count labeler to error out in datamaker, when visualization was enabled on the perception camera.

com.unity.perception/Runtime/GroundTruth/Labelers/CameraLabeler.cs

         internal void InternalCleanup() => Cleanup();
         internal void InternalVisualize() => OnVisualize();
 
-        private bool m_ShowVisualizations = false;
-
+        bool m_ShowVisualizations;
         /// <summary>
         /// Turns on/off the labeler's realtime visualization capability. If a labeler does not support realtime
         /// visualization (<see cref="supportsVisualization"/>) or visualization is not enabled on the PerceptionCamera
         {
-            get
-            {
-                return supportsVisualization && m_ShowVisualizations;
-            }
+            get => !supportsVisualization || !perceptionCamera || perceptionCamera.showVisualizations;
             set
             {
                 if (!supportsVisualization) return;
                     m_ShowVisualizations = value;
-
                     OnVisualizerEnabledChanged(m_ShowVisualizations);
                 }
             }
                 sensorHandle = newPerceptionCamera.SensorHandle;
                 Setup();
                 isInitialized = true;
-
-                m_ShowVisualizations = supportsVisualization && perceptionCamera.showVisualizations;
             }
             catch (Exception)
             {