Fix some bootstrap 5 left after migration from bootstrap 4

src/OrchardCore.Modules/OrchardCore.Forms/Views/Items/SelectPart.Fields.Edit.cshtml

@@ -65,7 +65,7 @@
 <script type="text/x-template" id="select-options-modal" asp-name="select-options-modal" at="Foot">
     <div>
         <transition v-on:enter="showStart" v-on:after-enter="showEnd" v-on:leave="showEnd" v-on:after-leave="showStart"  >
-            <div class="modal fade text-left" role="dialog" aria-hidden="true" ref="modal" v-if="showModal" v-on:click.self="$emit('modal-cancel')" >
+            <div class="modal fade text-start" role="dialog" aria-hidden="true" ref="modal" v-if="showModal" v-on:click.self="$emit('modal-cancel')" >
                 <div class="modal-dialog modal-dialog-centered" role="document">
                     <div class="modal-content">
                         <div class="modal-header">

src/OrchardCore.Modules/OrchardCore.OpenId/Views/OpenIdClientSettings.Edit.cshtml

@@ -180,7 +180,7 @@
 </script>
 
 <script type="text/x-template" id="parameters-modal">
-    <div class="modal fade @Html.IdFor(m => m)-ModalBody text-left" role="dialog" aria-hidden="true">
+    <div class="modal fade @Html.IdFor(m => m)-ModalBody text-start" role="dialog" aria-hidden="true">
         <div class="modal-dialog modal-dialog-centered" role="document">
             <div class="modal-content">
                 <div class="modal-header">

src/OrchardCore.Themes/TheAdmin/Views/Message.cshtml

@@ -1,4 +1,8 @@
 @{
+    if (Model.Type == null)
+    {
+        return;
+    }
     string type = Model.Type.ToString().ToLowerInvariant();
 }
 <div class="alert alert-dismissible fade show message-@type" role="alert">

src/OrchardCore/OrchardCore.DisplayManagement/Shapes/GroupShapes.cs

@@ -81,14 +81,14 @@ public async Task<IHtmlContent> Card(IDisplayHelper displayAsync, GroupingViewMo
             var cardIdPrefix = $"card-{shape.Identifier}-{shape.Grouping.Key}".HtmlClassify();
 
             var cardTag = new TagBuilder("div");
-            cardTag.AddCssClass("card");
+            cardTag.AddCssClass("card mb-2");
 
             var headerTag = new TagBuilder("div");
             headerTag.AddCssClass("card-header");
             headerTag.Attributes["id"] = $"heading-{cardIdPrefix}";
 
             var buttonTag = new TagBuilder("button");
-            buttonTag.AddCssClass("btn btn-link btn-block text-left");
+            buttonTag.AddCssClass("btn btn-link btn-block text-start");
             buttonTag.Attributes["type"] = "button";
             buttonTag.Attributes["data-bs-toggle"] = "collapse";
             buttonTag.Attributes["data-bs-target"] = $"#collapse-{cardIdPrefix}";