Fix for viewport distortion when using dynamic resolution

Fix for a distorted viewport when using no intermediate texture in XR rendering. When activating dynamic resolution and using a scale of < 1, the image becomes distorted. This fixes this issue.

Author: lpledouxUnity

Packages/com.unity.render-pipelines.universal/Runtime/UniversalRenderer.cs

@@ -904,6 +904,7 @@ public override void Setup(ScriptableRenderContext context, ref RenderingData re
                     CreateCameraRenderTarget(context, ref cameraTargetDescriptor, cmd, cameraData);
 
                 m_RenderOpaqueForwardPass.m_IsActiveTargetBackBuffer = !intermediateRenderTexture;
+                m_RenderTransparentForwardPass.m_IsActiveTargetBackBuffer = !intermediateRenderTexture;
 #if ENABLE_VR && ENABLE_XR_MODULE
                 m_XROcclusionMeshPass.m_IsActiveTargetBackBuffer = !intermediateRenderTexture;
 #endif