Don't call sacct in finalize if there are no Slurm jobs involved

src/xfel_calibrate/finalize.py

@@ -141,6 +141,8 @@ def get_job_info(jobs: List[str], fmt: List[str]) -> List[List[str]]:
     Result ordered according to order of jobs given
     Order of fields in inner lists follows fmt
     """
+    if not jobs:
+        return []  # Skip calling sacct if not using Slurm
 
     # will use JobID to match results to jobs (duplicate field in fmt is OK)
     fmt_query = ",".join(["JobID"] + fmt)