Update rust-lightning to use default_value_vec#850

Draft

carlaKC wants to merge 2 commits intolightningdevkit:mainfrom

carlaKC:macro-update

Commits on Mar 26, 2026

[blocked-4507]: Update rust-lightning to use default_value_vec
carlaKC
committed
Assert that we only have skimmed fees for single htlc forwards
carlaKC
committed