temp fix for "forEach" bug

This is a temporary fix for the "Cannot read properties of undefined (reading 'forEach')" bug. This will be fixed in a better way in v3.4.0

core/ticketActions/ticketOpener.js

@@ -136,6 +136,7 @@ module.exports = () => {
                  * @type {String[]}
                  */
                 const readonlyTicketadmin = currentTicketOptions.readonlyAdminroles
+                if (readonlyTicketadmin){
                     readonlyTicketadmin.forEach((role,index) => {
                         if (!config.adminRoles.includes(role) && !currentTicketOptions.adminroles.includes(role)){
                             try {
@@ -151,6 +152,7 @@ module.exports = () => {
                             }catch{}
                         }
                     })
+                }
 
                 //add member role
                 if (config.system.memberRole && ![" ","0","false","null","undefined"].includes(config.system.memberRole)){