Revert "Removed unnecessary aspect ratio lines that broke screen aspect when using non-standard viewports."

This reverts commit 79f2ab14bf.

Packages/com.unity.postprocessing@3.2.2/PostProcessing/Runtime/Effects/SuperResolution.cs

@@ -156,6 +156,7 @@ namespace UnityEngine.Rendering.PostProcessing
             _maxRenderSize = new Vector2Int(maxRenderWidth, maxRenderHeight);
             
             // Render to a smaller portion of the screen by manipulating the camera's viewport rect
+            camera.aspect = (_displaySize.x * _originalRect.width) / (_displaySize.y * _originalRect.height);
             camera.rect = new Rect(0, 0, _originalRect.width * _maxRenderSize.x / _displaySize.x, _originalRect.height * _maxRenderSize.y / _displaySize.y);
         }