Combine range_bkg_subtrcated checks in case of low stat

2 jobs for gtuci/bkg_sub_combine in 1 minute and 55 seconds (queued for 1 second)
Name Stage Failure
test Test
FAILED tests/checks/ - ValueE...
FAILED tests/checks/ - ValueError:...
================= 2 failed, 132 passed, 26 warnings in 20.75s ==================
Uploading artifacts for failed job
Uploading artifacts...
coverage.xml: found 1 matching files and directories

Uploading artifacts as "cobertura" to coordinator... 201 Created
id=21462102 responseStatus=201 Created token=9Tr1z9h9
Cleaning up project directory and file based variables
ERROR: Job failed: exit code 1