We now want to make sure that we get rid of checks on role.isDefault and replace them with checks on role.specialRole:

• For default roles, this is `role.specialRole === ${specialRoles.DEFAULT_ROLE}
• For admin roles, this is `role.specialRole === ${specialRoles.ADMIN_ROLE}

Part of ENG-5993

This diff handles invite-link-creator.js

Depends on D10116

Confirmed the use of roleIsDefaultRole had no change on the results in the code