Update babel config cache approach re: docs
Update babel config cache approach re: docs

Changed due to guidance in doc:
"You should not use [api.env] alongside with api.cache.forever()
or api.cache.never()." Instead, re-caching on env change.

hms-dbmi/fourfront,hms-dbmi/fourfront,4dn-dcic/fourfront,4dn-dcic/fourfront,hms-dbmi/fourfront,4dn-dcic/fourfront,4dn-dcic/fourfront,hms-dbmi/fourfront,hms-dbmi/fourfront