[CommCoreModule] Remove userID argument from initializeCryptoAccount(...)
Summary: Context: https://linear.app/comm/issue/ENG-2601/remove-userid-arg-from-jsi-initializecryptoaccount
Test Plan:
Logged return value of initializeCryptoAccount(...) and getUserPublicKey(...) and things remain as expected.
Also went through native SIWE flow and observed that public key was properly stored in the serverDB cookies table.
Reviewers: ashoat, tomek
Reviewed By: ashoat, tomek
Differential Revision: https://phab.comm.dev/D6172