Fix potential peer_state deadlocks in `finish_force_close_channel`#2597

TheBlueMatt merged 2 commits intolightningdevkit:mainlightningdevkit/rust-lightning:mainfrom

TheBlueMatt:2023-09-finish-force-close-deadlocksTheBlueMatt/rust-lightning:2023-09-finish-force-close-deadlocksCopy head branch name to clipboard