Add missing using directives and update AbpStyles references in App.razor files

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

@@ -2,6 +2,8 @@
 @using System.Globalization
 @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 +19,7 @@
     <base href="/" />
 
     <link href="https://fonts.googleapis.com/css?family=Roboto:300,400,500,700&display=swap" rel="stylesheet" />
+    <AbpStyles BundleName="@LeptonXLiteThemeBundles.Styles.Global" />
     <AbpStyles BundleName="@BlazorMudBlazorBasicThemeBundles.Styles.Global" />
 
     <HeadOutlet @rendermode="InteractiveServer" />

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

@@ -4,7 +4,9 @@
 @using Microsoft.AspNetCore.Http
 @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.Components.WebAssembly.WebApp
+@using Volo.Abp.AspNetCore.Mvc.UI.Theme.LeptonXLite.Bundling
 @inject IHostEnvironment Env
 @{
     var rtl = CultureHelper.IsRtl ? "rtl" : string.Empty;
@@ -20,6 +22,7 @@
     <base href="/" />
 
     <link href="https://fonts.googleapis.com/css?family=Roboto:300,400,500,700&display=swap" rel="stylesheet" />
+    <AbpStyles BundleName="@LeptonXLiteThemeBundles.Styles.Global" />
     <AbpStyles BundleName="@BlazorMudBlazorBasicThemeBundles.Styles.Global" WebAssemblyStyleFiles="GlobalStyles" />
 
     <HeadOutlet @rendermode="InteractiveAuto" />