Updated args['trsh'] if condition (#721)

When a scan job was being troubleshooted, it was not removing the scan
resolution troubleshoot correctly prior to writing the input gaussian
file. This change in the code ensures that it will be removed correctly
later in the code.

arc/scheduler.py

@@ -784,7 +784,16 @@ def run_job(self,
             self.deduce_job_adapter(level=Level(repr=level_of_theory), job_type=job_type)
         args = {'keyword': {}, 'block': {}}
         if trsh:
-            args['trsh'] = {'trsh': trsh}
+            if isinstance(trsh, (str, list)):
+                args['trsh'] = {'trsh': trsh}
+            elif isinstance(trsh, dict) and 'trsh' in args:
+                for key, value in trsh.items():
+                    if isinstance(args['trsh'][key], list) and isinstance(value, list) and key in args['trsh']:
+                        args['trsh'][key].extend(value)
+                    else:
+                        args['trsh'][key] = value
+            else:
+                args['trsh'] = trsh
         if shift:
             args['shift'] = shift
         if scan_trsh: