Add regression test

Author: colinodell

tests/unit/Extension/DisallowedRawHtml/DisallowedRawHtmlRendererTest.php

@@ -71,6 +71,16 @@ public static function dataProviderForTestWithDefaultSettings(): iterable
         yield ['<script>', '&lt;script>'];
         yield ['<plaintext>', '&lt;plaintext>'];
 
+        // Newline/whitespace bypass attempts (security fix)
+        yield ["<script   >", "&lt;script   >"];
+        yield ["<script\n>", "&lt;script\n>"];
+        yield ["<script\t>", "&lt;script\t>"];
+        yield ["<script\r\n>", "&lt;script\r\n>"];
+        yield ["<iframe\nwidth=\"560\">", "&lt;iframe\nwidth=\"560\">"];
+
+        // Ensure non-disallowed tags with similar names are NOT filtered
+        yield ['<scriptfoo>', '<scriptfoo>'];
+
         // Tags not escaped by default
         yield ['<strong>', '<strong>'];
     }
@@ -107,6 +117,11 @@ public static function dataProviderForTestWithCustomSettings(): iterable
         yield ['<strong/>', '&lt;strong/>'];
         yield ['<strong />', '&lt;strong />'];
 
+        // Newline bypass with custom config
+        yield ["<strong   >", "&lt;strong   >"];
+        yield ["<strong\n>", "&lt;strong\n>"];
+        yield ["<strong\t>", "&lt;strong\t>"];
+
         // Defaults that I didn't include in my custom config
         yield ['<title>', '<title>'];
         yield ['<textarea>', '<textarea>'];