job-list: initialize state masks to state NEW

Problem: Bitmasks that track job states that have been
reached / processed are never initialized.  Therefore, the
job state of "NEW" is just assumed.

Solution: Initialize these bitmasks to NEW to make the state
formally stored.

Author: chu11

src/modules/job-list/job_state.c

@@ -164,6 +164,9 @@ static struct job *job_create (struct list_ctx *ctx, flux_jobid_t id)
         return NULL;
     }
 
+    job->states_mask = FLUX_JOB_STATE_NEW;
+    job->states_events_mask = FLUX_JOB_STATE_NEW;
+
     return job;
 }