Fix RegexValidator allowing partial matches

Now RegexValidator must require a full match on the target string to return a successfull match

src/Pure.Blazor.Components/Forms/Validators/RegexValidator.cs

@@ -19,7 +19,7 @@ public override ValidationResult ExecuteValidate(string? input)
         }
 
         var match = _rx.Match(input);
-
-        return new ValidationResult(match.Success, match.Success == false ? $"{input} does not match the regular expression" : null);
+        var success = match.Success && match.Value == input;
+        return new ValidationResult(success, success == false ? $"{input} does not match the regular expression" : null);
     }
-}
+}