Add a few more cookie names (#3907)

Author: ryanbr

assets/resources/scriptlets.js

@@ -3417,6 +3417,7 @@ function setCookie(
         'true', 't', 'false', 'f',
         'y', 'n',
         'yes', 'no',
+        'necessary', 'required',
     ];
     if ( validValues.includes(value.toLowerCase()) === false ) {
         if ( /^\d+$/.test(value) === false ) { return; }