CI robustness: monitor fix, H200 nodes, workspace pre-clean #4222

Job	Run time
Lint Gate	1m 17s
Detect File Changes	10s
Georgia Tech \| Phoenix (gpu-omp)	24m 50s
Github (ubuntu, mpi, no-debug, true)	1h 33m 33s
Oak Ridge \| Frontier (gpu-omp)	1s
Oak Ridge \| Frontier (cpu)	1s
Georgia Tech \| Phoenix (gpu-acc)	1s
Oak Ridge \| Frontier (AMD) (cpu)	1s
Oak Ridge \| Frontier (gpu-acc)	1s
Georgia Tech \| Phoenix (cpu)	12s
Github (ubuntu, mpi, debug, true)	1h 44m 52s
Github (macos, mpi, debug, false)	1h 19m 40s
Github (ubuntu, no-mpi, single, no-debug, false)	28m 36s
Github (ubuntu, mpi, debug, false)	2h 5m 21s
Github (ubuntu, mpi, no-debug, false)	2h 14m 47s
Github (macos, mpi, no-debug, false)	1h 23m 16s
Oak Ridge \| Frontier (AMD) (gpu-omp)	1s
	11h 16m 40s

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