Fixed fogbugz case 1325911 (Unity-Technologies#4115)

* * Update volume manager to use baseCamera's settings for XR multipass rendering. This fixed the case where right eye pass uses overlay camera's settings from the left eye pass.

* Fixed formatting.

* Addressed feedback - moved multipass handling code into the xr if block.

com.unity.render-pipelines.universal/Runtime/UniversalRenderPipeline.cs

@@ -505,6 +505,12 @@ static void RenderCameraStack(ScriptableRenderContext context, Camera baseCamera
                     xrActive = true;
                     // Helper function for updating cameraData with xrPass Data
                     m_XRSystem.UpdateCameraData(ref baseCameraData, baseCameraData.xr);
+
+                    // Update volume manager to use baseCamera's settings for XR multipass rendering.
+                    if (baseCameraData.xr.multipassId > 0)
+                    {
+                        UpdateVolumeFramework(baseCamera, baseCameraAdditionalData);
+                    }
                 }
 #endif