- Store the mempool expiry (-mempoolexpiry) in CTxMemPool as a
std::chrono::seconds member.
- Remove the requirement to explicitly specify a mempool expiry for
LimitMempoolSize(...), just use the newly-introduced member.
- Remove all now-unnecessary instances of:
std::chrono::hours{gArgs.GetIntArg("-mempoolexpiry", DEFAULT_MEMPOOL_EXPIRY)}
- Rename DEFAULT_MEMPOOL_EXPIRY to indicate time unit
This is a partial backport of core#25290
https://github.com/bitcoin/bitcoin/pull/25290/commits/aa9141cd8185cb7ad532bc16feb9d302b05d9697
https://github.com/bitcoin/bitcoin/pull/25290/commits/1ecc77321deb61b9f6888e4e10752b9d972fd26e
Depends on D15300