Refactor dropdown menu classes to remove unnecessary alignment classes

Author: maliming

modules/basic-theme/src/Volo.Abp.AspNetCore.Mvc.UI.Theme.Basic/Themes/Basic/Components/Toolbar/LanguageSwitch/Default.cshtml

@@ -9,7 +9,7 @@
             @Model.CurrentLanguage.DisplayName
         </a>
 
-        <div class="dropdown-menu dropdown-menu-end border-0 shadow-sm" aria-labelledby="dropdownMenuLink">
+        <div class="dropdown-menu border-0 shadow-sm" aria-labelledby="dropdownMenuLink">
             @foreach (var language in Model.OtherLanguages)
             {
                 <a class="dropdown-item" href="~/Abp/Languages/Switch?culture=@(language.CultureName)&uiCulture=@(language.UiCultureName)&returnUrl=@(System.Net.WebUtility.UrlEncode(Context.Request.GetEncodedPathAndQuery()))">@language.DisplayName</a>

modules/basic-theme/src/Volo.Abp.AspNetCore.Mvc.UI.Theme.Basic/Themes/Basic/Components/Toolbar/UserMenu/Default.cshtml

@@ -21,7 +21,7 @@
 
     @if (Model.Items.Any())
     {
-        <div class="dropdown-menu dropdown-menu-end border-0 shadow-sm" aria-labelledby="dropdownMenuLink">
+        <div class="dropdown-menu border-0 shadow-sm" aria-labelledby="dropdownMenuLink">
             @foreach (var menuItem in Model.Items)
             {
                 var elementId = string.IsNullOrEmpty(menuItem.ElementId) ? string.Empty : $"id=\"{menuItem.ElementId}\"";