fix: 修复关闭标签页导致后续标签页重绘问题

Author: ArgoZhang

src/BootstrapBlazor/Components/Tab/Tab.razor

@@ -24,14 +24,18 @@ else
                     var item = TabItems.Find(i => i.IsActive);
                     if (item != null)
                     {
-                        @RenderTabItem(item)
+                        <div id="@item.Id" class="@GetTabItemClassString(item)">
+                            @RenderTabItem(item)
+                        </div>
                     }
                 }
                 else
                 {
                     foreach (var item in TabItems)
                     {
-                        @RenderTabItem(item)
+                        <div @key="@item" id="@item.Id" class="@GetTabItemClassString(item)">
+                            @RenderTabItem(item)
+                        </div>
                     }
                 }
             </CascadingValue>

src/BootstrapBlazor/Components/Tab/Tab.razor.cs

@@ -486,6 +486,10 @@ public partial class Tab
 
     private bool IsPreventDefault => _contextMenuZone != null;
 
+    private static string? GetTabItemClassString(TabItem item) => CssBuilder.Default("tabs-body-content")
+        .AddClass("d-none", item is { IsActive: false })
+        .Build();
+
     /// <summary>
     /// <inheritdoc/>
     /// </summary>