Correctly handle lost `MonitorEvent`s#3984

Draft

TheBlueMatt wants to merge 11 commits intolightningdevkit:mainfrom

TheBlueMatt:2025-07-mon-event-failures

Commits on Aug 2, 2025

Re-fail perm-failed HTLCs on startup in case of `MonitorEvent` loss
TheBlueMatt
committed
Add a new `ChannelMoniorUpdateStep::ReleasePaymentComplete`
TheBlueMatt
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Prepare to provide new `ReleasePaymentComplete` monitor updates
TheBlueMatt
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Generate new `ReleasePaymentComplete` monitor updates
TheBlueMatt
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Stop re-hydrating pending payments once they are fully resolved
TheBlueMatt
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Properly provide `PaymentPathSuccessful` event for replay claims
TheBlueMatt
committed