Remote-control connections now renew the same way for every session

When a session is controlled remotely, Claude Code keeps a stream open to receive messages and renews it from time to time. It now always renews that stream. If a separate worker connection exists, it waits until that connection is quiet first; if not, it renews straight away. Before, it only waited for one particular kind of worker connection. The early stop in the resync step after a reconnect was also removed, so that step now runs through.