feat(PdfReader): add ShowToolbar parameter

Author: ArgoZhang

src/components/BootstrapBlazor.PdfReader/PdfReader.razor

@@ -3,9 +3,9 @@
 @inherits BootstrapModuleComponentBase
 
 <div @attributes="@AdditionalAttributes" id="@Id" class="@ClassString" style="@StyleString">
-    @if (ShowToolbar)
-    {
-        <div class="bb-view-toolbar">
+    <div class="bb-view-toolbar">
+        @if (ShowToolbar)
+        {
             <div class="bb-view-title">
                 @if (EnableThumbnails)
                 {
@@ -79,8 +79,8 @@
                     </div>
                 </div>
             </div>
-        </div>
-    }
+        }
+    </div>
     <div class="bb-view-main">
         @if (EnableThumbnails)
         {

src/components/BootstrapBlazor.PdfReader/PdfReader.razor.cs

@@ -131,6 +131,7 @@ public partial class PdfReader
 
     private string? StyleString => CssBuilder.Default()
         .AddClass($"--bb-pdf-view-height: {ViewHeight};", !string.IsNullOrEmpty(ViewHeight))
+        .AddClass($"--bb-pdf-toolbar-height: 0;", !ShowToolbar)
         .AddClassFromAttributes(AdditionalAttributes)
         .Build();