[lib] Update genesis constant id to new schema

Summary:
ENG-4394

After the id schema migration, the genesis.id constant needs to be different on clients, but remain the same on the keyserver. This diff adds a new env var to check if the code is running in the keyserver and if not, changes the genesis id.

Test Plan: console.log on web, keyserver dev and keyserver prod, and check if they are correct

Reviewers: kamil, tomek

Reviewed By: tomek

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D8519