Disallow user-provided payer_signing_pubkey#3264

TheBlueMatt merged 4 commits into

lightningdevkit:mainlightningdevkit/rust-lightning:mainfrom

jkczyz:2024-08-remove-user-provided-payer-idjkczyz/rust-lightning:2024-08-remove-user-provided-payer-idCopy head branch name to clipboard