TrfTestsART: fix q443 postExec configuration for jets/pflow
Fix postExec configuration for jets/pflow in the q443 TrfTestsART test and run it only for the AODtoDAOD step. Related to the discussions in ATLASRECTS-7119
Fix postExec configuration for jets/pflow in the q443 TrfTestsART test and run it only for the AODtoDAOD step. Related to the discussions in ATLASRECTS-7119