fix(SW-3578): Fixed session issue when sas session expires
* fix(SW-3578): Fixed session issue when sas session expires
* base socialLogin auto-features on validSession and being linked
* remove unused object
* remove 'import server-only' for isValidSession() since it's only using passed data
* remove isValidClientSession()
Approved-by: Joakim Jäderberg
Approved-by: Anton Gunnarsson