chore: WIP on fix/revert-to-IDictionary-and-allow-sorting

Author: MaggieKimani1

src/Microsoft.OpenApi/Validations/Rules/OpenApiComponentsRules.cs

@@ -5,6 +5,7 @@
 using System.Text.RegularExpressions;
 using Microsoft.OpenApi.Models;
 using Microsoft.OpenApi.Properties;
+using System;
 
 namespace Microsoft.OpenApi.Validations.Rules
 {
@@ -17,7 +18,7 @@ public static class OpenApiComponentsRules
         /// <summary>
         /// The key regex.
         /// </summary>
-        internal static readonly Regex KeyRegex = new(@"^[a-zA-Z0-9\.\-_]+$");
+        internal static readonly Regex KeyRegex = new(@"^[a-zA-Z0-9\.\-_]+$", RegexOptions.None, TimeSpan.FromMilliseconds(100));
 
         /// <summary>
         /// All the fixed fields declared above are objects