fixes erronous render of add button

awx/ui_next/src/screens/User/UserRoles/UserRolesList.jsx

@@ -98,8 +98,7 @@ function UserRolesList({ i18n, user }) {
   );
 
   const canAdd =
-    user?.summary_fields?.user_capabilities?.edit ||
-    (actions && Object.prototype.hasOwnProperty.call(actions, 'POST'));
+    actions && Object.prototype.hasOwnProperty.call(actions, 'POST');
 
   const detailUrl = role => {
     const { resource_id, resource_type } = role.summary_fields;

awx/ui_next/src/screens/User/UserRoles/UserRolesList.test.jsx

@@ -12,7 +12,7 @@ jest.mock('../../../api/models/Roles');
 
 UsersAPI.readOptions.mockResolvedValue({
   data: {
-    actions: { GET: {} },
+    actions: { GET: {}, POST: {} },
     related_search_fields: [],
   },
 });