refactor(auth): make updateCacheEntry API OCPP version-agnostic

refactor(auth): make updateCacheEntry API OCPP version-agnostic

Decouple updateCacheEntry from OCPP 2.0-specific types by accepting
AuthorizationStatus and optional expiryDate instead of pre-built
AuthorizationResult and TTL. This centralizes result construction,
date conversion, TTL computation, and expired-entry guards in the
auth service, eliminating duplicated logic across OCPP 1.6 and 2.0
callers. Also change OCPPAuthAdapter generic default from
OCPP20IdTokenType|string to unknown to remove the last OCPP
version-specific type from the auth service interface.