Fix: Running Test with a comment fails test on Understand The immediately invoked function expression iife (#39347)

* Update Regex to test if it's an IIFE instead of checking for a parenthases at the end.

* Second Test will now pass the test

* Escape One Parenthese

* Update Regex to be more structured

Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com>

* Missing regex ending literal

Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com>

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/object-oriented-programming/understand-the-immediately-invoked-function-expression-iife.english.md

@@ -33,7 +33,7 @@ tests:
   - text: The function should be anonymous.
     testString: assert(/\((function|\(\))(=>|\(\)){?/.test(code.replace(/\s/g, "")));
   - text: Your function should have parentheses at the end of the expression to call it immediately.
-    testString: assert(/}?\)\(\)$|}\(\)\)$/.test(code.replace(/[\s;]/g, "")));
+    testString: assert(/\(.*(\)\(|\}\(\))\)/.test(code.replace(/[\s;]/g, "")));
 
 ```