fix: keep native log container id in sync when Swarm/compose replaces it

Closes #5134. The container list queries in the Logs tab only fetched
once on mount, so if the underlying container was replaced (restart,
reschedule, redeploy) while the page stayed open, the native log
WebSocket kept streaming from the stale id and either froze or failed
with 'No such container'.

Poll the container list every 5s and reconcile the selected id against
it, matching the pattern already used for automatic selection.