slicing rename test cleanup and bugfix

awx/ui/client/features/jobs/jobsList.controller.js

@@ -77,6 +77,10 @@ function ListJobsController (
         });
 
     vm.getSliceJobDetails = (job) => {
+        if (!job.job_slice_count) {
+            return null;
+        }
+
         if (job.job_slice_count === 1) {
             return null;
         }

awx/ui/client/features/output/details.component.js

@@ -129,6 +129,10 @@ function getSourceWorkflowJobDetails () {
 function getSliceJobDetails () {
     const count = resource.model.get('job_slice_count');
 
+    if (!count) {
+        return null;
+    }
+
     if (count === 1) {
         return null;
     }