Issue #SB-22354 fix: Added env variable for portal session secret key (#2157)

* Issue #SB-20650 fix: Added anonymous user TTL value

* Issue #SB-20650 fix: Updated anonymous user TTL to 30 minutes

* Issue #SB-22354 fix: Added env variable for API whitelist flag

* Issue #SB-22354 fix: Added env variable for portal session secret key