fix PageHeader spacing problem

framework/src/Volo.Abp.AspNetCore.Components.Web.Theming.MudBlazor/Layout/PageHeader.razor

@@ -6,7 +6,7 @@
 @inject IOptions<PageHeaderOptions> Options
 @inject IBrandingProvider BrandingProvider
 
-<MudGrid Class="entry-row">
+<MudGrid Class="entry-row" Spacing="0">
 
     @if (PageLayout.Title.IsNullOrEmpty())
     {

framework/src/Volo.Abp.MudBlazorUI/wwwroot/volo.abp.mudblazorui.css

@@ -57,4 +57,4 @@
 .abp-crud-page-header-actions {
     display: flex;
     gap: 8px;
-}
+}

templates/app/aspnet-core/src/MyCompanyName.MyProjectName.Blazor.Server/Components/App.razor

@@ -3,6 +3,7 @@
 @using Microsoft.Extensions.Hosting
 @using Volo.Abp.AspNetCore.Components.Server.MudBlazorBasicTheme.Bundling
 @using Volo.Abp.AspNetCore.Components.Web.Theming.MudBlazor.Bundling
+@using Volo.Abp.AspNetCore.Mvc.UI.Theme.LeptonXLite.Bundling
 @inject IHostEnvironment Env
 @{
     var rtl = CultureHelper.IsRtl ? "rtl" : string.Empty;
@@ -17,6 +18,7 @@
     <title>MyCompanyName.MyProjectName.Blazor.Server</title>
     <base href="/" />
 
+    <AbpStyles BundleName="@LeptonXLiteThemeBundles.Styles.Global" />
     <AbpStyles BundleName="@BlazorMudBlazorBasicThemeBundles.Styles.Global" />
 
     <HeadOutlet @rendermode="InteractiveServer" />