Fix file size not correctly updating after E.G, optimizing image

src/PicView.Avalonia/ImageHandling/ImageOptimizer.cs

@@ -36,6 +36,7 @@ public static class ImageOptimizer
                 DebugHelper.LogDebug(nameof(ImageOptimizer), nameof(OptimizeImageAsync), ex);
             }
         });
+        await NavigationManager.QuickReload();
         
         TitleManager.SetTitle(vm);
     }

src/PicView.Avalonia/Navigation/ImageIterator.cs

@@ -528,6 +528,7 @@ public class ImageIterator : IAsyncDisposable
     public async Task QuickReload()
     {
         RemoveCurrentItemFromPreLoader();
+        _vm.PicViewer.FileInfo.Value = new FileInfo(_vm.PicViewer.FileInfo.CurrentValue.FullName);
         await IterateToIndex(CurrentIndex, new CancellationTokenSource()).ConfigureAwait(false);
     }