Fix outerloop NonBacktracking test throwing argument exception (#66693)

Author: stephentoub

src/libraries/System.Text.RegularExpressions/tests/FunctionalTests/Regex.KnownPattern.Tests.cs

@@ -1431,11 +1431,20 @@ public async Task PatternsDataSet_ConstructRegexForAll_NonBacktracking()
         {
             foreach (DataSetExpression exp in s_patternsDataSet.Value)
             {
+                if ((exp.Options & (RegexOptions.ECMAScript | RegexOptions.RightToLeft)) != 0)
+                {
+                    // Unsupported options with NonBacktracking
+                    continue;
+                }
+
                 try
                 {
                     await RegexHelpers.GetRegexAsync(RegexEngine.NonBacktracking, exp.Pattern, exp.Options);
                 }
-                catch (Exception e) when (e.Message.Contains(nameof(RegexOptions.NonBacktracking))) { }
+                catch (NotSupportedException e) when (e.Message.Contains(nameof(RegexOptions.NonBacktracking)))
+                {
+                    // Unsupported patterns
+                }
             }
         }