fix: adjust `PossiblyNoBeam` thresholds for RG-A (#257) #960

Job	Run time
build_coatjava	1m 19s
download_test_data (detectors, mon)	4s
build_timelines	28s
download_test_data (physics, dst)	2s
test_swifjob (detectors)	1m 12s
run_monitoring (detectors)	1m 38s
test_swifjob (physics)	1m 28s
run_monitoring (physics)	1m 40s
run_timelines (detectors, -n 4 --skip-mya)	4m 3s
run_timelines (physics)	42s
Deployment	16s
	12m 52s

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