Fixing user menu reg exp issue

components/device-mgt/org.wso2.carbon.device.mgt.ui/src/main/resources/jaggeryapps/devicemgt/app/units/cdmf.unit.ui.header.user-menu/public/js/user-menu.js

@@ -6,6 +6,7 @@
  * @returns {boolean} Returns true if input matches RegEx
  */
 function inputIsValid(regExp, inputString) {
+    regExp = new RegExp(regExp);
     return regExp.test(inputString);
 }