doc(DockView): update lock sample code (#4376)

* dock: 更新锁定示例

* chore: upgrade dockview package to 8.1.6

Author: ArgoZhang

src/BootstrapBlazor.Server/BootstrapBlazor.Server.csproj

@@ -36,7 +36,7 @@
     <PackageReference Include="BootstrapBlazor.CherryMarkdown" Version="8.0.1" />
     <PackageReference Include="BootstrapBlazor.CodeEditor" Version="8.0.2" />
     <PackageReference Include="BootstrapBlazor.Dock" Version="8.1.7" />
-    <PackageReference Include="BootstrapBlazor.DockView" Version="8.1.5" />
+    <PackageReference Include="BootstrapBlazor.DockView" Version="8.1.6" />
     <PackageReference Include="BootstrapBlazor.DriverJs" Version="8.0.1" />
     <PackageReference Include="BootstrapBlazor.ElementIcon" Version="8.0.0" />
     <PackageReference Include="BootstrapBlazor.FileViewer" Version="8.1.0" />

src/BootstrapBlazor.Server/Components/Samples/DockViews2/DockViewLock.razor

@@ -7,9 +7,9 @@
 
 <Button OnClick="OnToggleLock" Text="@LockText"></Button>
 
-<DockViewV2 Name="DockViewLock" OnLockChangedCallbackAsync="OnLockChangedCallbackAsync" class="dock-lock-demo">
+<DockViewV2 Name="DockViewLock" OnLockChangedCallbackAsync="OnLockChangedCallbackAsync" IsLock="IsLock" class="dock-lock-demo">
     <DockViewContent Type="DockViewContentType.Row">
-        <DockViewComponent Key="tab1" Title="标签一" IsLock="IsLock" Width="18">
+        <DockViewComponent Key="tab1" Title="标签一" Width="18">
             <Table TItem="DynamicObject" DynamicContext="DataTableDynamicContext"
                    IsStriped="true" IsBordered="true" IsExcel="true" ShowRefresh="true"
                    ShowDefaultButtons="false" IsFixedHeader="false">
@@ -24,7 +24,7 @@
                 </DetailRowTemplate>
             </Table>
         </DockViewComponent>
-        <DockViewComponent Key="tab2" Title="标签二" IsLock="IsLock">
+        <DockViewComponent Key="tab2" Title="标签二">
             <Table TItem="Foo" @bind-Items="Items"
                    IsStriped="true" IsBordered="true" IsMultipleSelect="true" IsFixedHeader="true"
                    ShowToolbar="true" ShowExtendButtons="true" ShowSkeleton="true"
@@ -39,7 +39,7 @@
                 </TableColumns>
             </Table>
         </DockViewComponent>
-        <DockViewComponent Key="tab3" Title="标签三" IsLock="IsLock">
+        <DockViewComponent Key="tab3" Title="标签三">
             <Table TItem="TreeFoo" IsBordered="true" IsStriped="true"
                    Items="@TreeItems" IsTree="true" TreeNodeConverter="@TreeNodeConverter" OnTreeExpand="@OnTreeExpand" IsFixedHeader="true">
                 <TableColumns>