Remove redundant initializer

src/Core/Components/DataGrid/FluentDataGrid.razor.cs

@@ -243,7 +243,7 @@ public partial class FluentDataGrid<TGridItem> : FluentComponentBase, IHandleEve
     /// If not set and a <see cref="ItemsProvider"/> is present, the grid will show <see cref="LoadingContent"/> until the provider's first return.
     /// </summary>
     [Parameter]
-    public bool? Loading { get; set; } = null;
+    public bool? Loading { get; set; }
 
     /// <summary>
     /// Gets or sets the content to render when <see cref="Loading"/> is true.