test: 更新单元测试

Author: ArgoZhang

test/UnitTest/Components/TabTest.cs

@@ -61,6 +61,9 @@ public async Task ContextMenu_Ok()
             });
         });
 
+        var menuItem = cut.Find(".tabs-item");
+        await cut.InvokeAsync(() => menuItem.ContextMenu());
+
         var item = cut.Find(".dropdown-menu .dropdown-item");
         await cut.InvokeAsync(() => item.Click());
         Assert.True(clicked);