fixed study view store ts error
fixed study view store ts error

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

Former-commit-id: 7e35d0af72c7a734e8834a9f4559fdd6b2296f49
cBioPortal/cbioportal-frontend,alisman/cbioportal-frontend,cBioPortal/cbioportal-frontend,alisman/cbioportal-frontend,cBioPortal/cbioportal-frontend,alisman/cbioportal-frontend,cBioPortal/cbioportal-frontend,cBioPortal/cbioportal-frontend,alisman/cbioportal-frontend,alisman/cbioportal-frontend,cBioPortal/cbioportal-frontend,alisman/cbioportal-frontend