Remove textures from cache on unmap if not mapped and modified (#4211)

Ryujinx.Graphics.Gpu/Image/Texture.cs

@@ -1676,6 +1676,13 @@ namespace Ryujinx.Graphics.Gpu.Image
             }
 
             RemoveFromPools(true);
+
+            // We only want to remove if there's no mapped region of the texture that was modified by the GPU,
+            // otherwise we could lose data.
+            if (!Group.AnyModified(this))
+            {
+                _physicalMemory.TextureCache.QueueAutoDeleteCacheRemoval(this);
+            }
         }
 
         /// <summary>