Enable multi-study study-view cache

[kalletlak]

Fix https://github.com/cBioPortal/cbioportal/issues/10746

[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
80.0% Coverage on New Code
0.0% Duplication on New Code

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[inodb]

Let's wait for Aaron to look this over. We should also monitor the redis cache when we deploy this (how much does this increase the memory footprint? How often are we clearing existing keys etc)

[alisman]

@kalletlak @jjgao @inodb i think we limited it to single study queries because we worried about permutations of studies overwhelming cache. probably should have tried it first to see if there was a problem. anyway, we can merge this but we should perhaps monitor the cache for the public portal to see if this changes things dramatically