HDRenderLoop: Fix debugViewtiles compilation

Assets/ScriptableRenderLoop/HDRenderLoop/Debug/Resources/DebugViewTiles.shader

                 int maxLights = 32;
                 if (tileCoord.y < LIGHTCATEGORY_COUNT && tileCoord.x < maxLights + 3)
                 {
-                    PositionInput mousePosInput = GetPositionInput(_MousePixelCoord, _ScreenSize.zw);
+                    PositionInputs mousePosInput = GetPositionInput(_MousePixelCoord, _ScreenSize.zw);
                     float depthMouse = LOAD_TEXTURE2D(_CameraDepthTexture, mousePosInput.unPositionSS).x;
                     UpdatePositionInput(depthMouse, _InvViewProjMatrix, GetWorldToViewMatrix(), mousePosInput);