Update BP `NetworkGraph` and `Scorer` persist frequency#2226

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

alecchendev:2023-04-persist-network-graph-on-rgsalecchendev/rust-lightning:2023-04-persist-network-graph-on-rgsCopy head branch name to clipboard