do not skip samples/patients with no alteration (fix cBioPortal/cbioportal#8047)
do not skip samples/patients with no alteration (fix cBioPortal/cbioportal#8047)

Signed-off-by: Onur Sumer <s.onur.sumer@gmail.com>

Former-commit-id: 00fb9689123bc63c8eb0f31d0e6c6972c9c02e25
alisman/cbioportal-frontend,alisman/cbioportal-frontend,alisman/cbioportal-frontend,alisman/cbioportal-frontend,cBioPortal/cbioportal-frontend,cBioPortal/cbioportal-frontend,cBioPortal/cbioportal-frontend,alisman/cbioportal-frontend,cBioPortal/cbioportal-frontend,cBioPortal/cbioportal-frontend,cBioPortal/cbioportal-frontend,alisman/cbioportal-frontend