refactor(core): Simplify license autorenewal on leadership transition #13503
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Summary
In multi-main setup, only the leader is allowed to periodically renew the license. On leadership transition, the new leader starts renewing and the former leader stops doing so.
Until now we did so by reinitializing the license manager accounting for the new instance role. This PR simplifies by updating autorenewal state without going through the full init flow.
Related Linear tickets, Github issues, and Community forum posts
https://linear.app/n8n/issue/CAT-662/simplify-license-renewal-and-reload
Review / Merge checklist
release/backport
(if the PR is an urgent fix that needs to be backported)