[8.0] fix: JobAgent fails when checking status of the jobs using JobMonitoringClient

[aldbr]

Pilots with failed jobs are failing with:

Traceback (most recent call last):
  File "/cvmfs/lhcb.cern.ch/lhcbdirac/versions/v11.0.27-1702983535/Linux-x86_64/lib/python3.11/site-packages/DIRAC/Core/Base/AgentReactor.py", line 130, in __finalize
    self.__agentModules[agentName]["instanceObj"].finalize()
  File "/cvmfs/lhcb.cern.ch/lhcbdirac/versions/v11.0.27-1702983535/Linux-x86_64/lib/python3.11/site-packages/DIRAC/WorkloadManagementSystem/Agent/JobAgent.py", line 881, in finalize
    result = self._checkSubmittedJobs()
             ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/cvmfs/lhcb.cern.ch/lhcbdirac/versions/v11.0.27-1702983535/Linux-x86_64/lib/python3.11/site-packages/DIRAC/WorkloadManagementSystem/Agent/JobAgent.py", line 725, in _checkSubmittedJobs
    if res["Value"][jobID]["Status"] == JobStatus.RUNNING:
       ~~~~~~~~~~~~^^^^^^^
KeyError: '827068098'

2023-12-21T07:59:07.609424Z INFO [LaunchAgent] DiskSpace (MB) = 6430006

The bug was introduced with dab5430.

Cause of the issue: the jobID is processed as a str in JobAgent, whereas it is returned as a int by the JobMonitoringClient if I understand correctly (type hints would have been more than welcome here).

BEGINRELEASENOTES
*WorkloadManagement
FIX: JobAgent interaction with JobMonitoringClient
ENDRELEASENOTES

[DIRACGridBot]

Sweep summary

Sweep ran in https://github.com/DIRACGrid/DIRAC/actions/runs/7446214355

Successful:

• integration