Merge pull request #2025 from TheBlueMatt/2023-02-no-pub-genesis-hashes

Remove genesis block hash from public API

diff --cc lightning-background-processor/src/lib.rs
Simple merge

diff --cc lightning/src/ln/channelmanager.rs
Simple merge

diff --cc lightning/src/ln/outbound_payment.rs
Simple merge

diff --cc lightning/src/routing/gossip.rs
Simple merge