Somewhat clean up closure pipelines#3881

Merged

tnull merged 10 commits intolightningdevkit:mainfrom

TheBlueMatt:2025-06-fc-always-broadcast

Jul 14, 2025

Commits on Jul 11, 2025

Add a `message` field to `ClosureReason::HolderForceClosed`
TheBlueMatt
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Clean up `MsgHandleErrInternal` method annotations and format
TheBlueMatt
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Drop the (broken) ability to disable broadcast when FC'ing a chan
TheBlueMatt
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Rely on `convert_channel_err` over `locked_close_chan`
TheBlueMatt
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Avoid passing `FundingScope` around during channel closure
TheBlueMatt
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Decide on close-broadcasting commitment txn based on channel state
TheBlueMatt
committed