Prevent tree expansion blocking render

LANCommander/Components/FileManagerComponents/FileManager.razor

@@ -293,14 +293,17 @@
 
             foreach (var child in directory.Children)
             {
-                var paths = Directory.EnumerateDirectories(child.Path, "*", new EnumerationOptions
+                await Task.Run(() =>
-                    {
+                {
-                        IgnoreInaccessible = true,
+                    var paths = Directory.EnumerateDirectories(child.Path, "*", new EnumerationOptions
-                        RecurseSubdirectories = true,
+                        {
-                        MaxRecursionDepth = 1
+                            IgnoreInaccessible = true,
-                    });
+                            RecurseSubdirectories = true,
+                            MaxRecursionDepth = 1
+                        });
 
-                child.PopulateChildren(paths);
+                    child.PopulateChildren(paths);
+                });
             }
         }
     }