Fix functional tests

src/OrchardCore.Modules/OrchardCore.AdminDashboard/Services/DashboardPartContentTypeDefinitionHandler.cs

@@ -15,7 +15,7 @@ public sealed class DashboardPartContentTypeDefinitionHandler : IContentDefiniti
     /// </summary>
     public void ContentTypeBuilding(ContentTypeBuildingContext context)
     {
-        if (!context.Record.Settings.TryGetPropertyValue(nameof(ContentTypeSettings), out var node))
+        if (context?.Record?.Settings is null || !context.Record.Settings.TryGetPropertyValue(nameof(ContentTypeSettings), out var node))
         {
             return;
         }
@@ -52,7 +52,7 @@ public void ContentTypeBuilding(ContentTypeBuildingContext context)
     /// </summary>
     public void ContentTypePartBuilding(ContentTypePartBuildingContext context)
     {
-        if (!context.Record.PartName.EqualsOrdinalIgnoreCase(nameof(DashboardPart)))
+        if (context?.Record?.Settings is null || !context.Record.PartName.EqualsOrdinalIgnoreCase(nameof(DashboardPart)))
         {
             return;
         }

src/OrchardCore/OrchardCore.DisplayManagement.Abstractions/Utilities/StringExtensions.cs

@@ -1,14 +1,28 @@
+using System.Buffers;
+
 namespace OrchardCore.DisplayManagement.Utilities;
 
 public static class StringExtensions
 {
+    private static readonly SearchValues<char> AlternateChars = SearchValues.Create("-.");
+
     /// <summary>
     /// Encodes dashed and dots so that they don't conflict in filenames.
     /// </summary>
     /// <param name="alternateElement"></param>
     /// <returns></returns>
     public static string EncodeAlternateElement(this string alternateElement)
     {
+        if (string.IsNullOrEmpty(alternateElement))
+        {
+            return "";
+        }
+
+        if (!alternateElement.AsSpan().ContainsAny(AlternateChars))
+        {
+            return alternateElement;
+        }
+
         return alternateElement.Replace("-", "__").Replace('.', '_');
     }
 }