Add APIs to prune completed state for LSPS1/LSPS2/LSPS5#4526

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f3r10 wants to merge 1 commit intolightningdevkit:mainfrom

f3r10:feat/add_apis_to_prune_completed_state

Commits on Mar 31, 2026

lsps1: Add `prune_order` API to remove completed order state
f3r10
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