confirmationTargetFor function
HIGH maps to a 2-block confirmation target, MEDIUM to 6, LOW to 24 — the
only part of fee estimation that stays here, because the enum is a Dart
enum and the IR has none. Everything the target is then USED for lives in
BtcFeePlan (generated from packages/spec/src/btc.fee-rules.ts).
Implementation
int confirmationTargetFor(BtcFeePriority priority) => switch (priority) {
BtcFeePriority.high => 2,
BtcFeePriority.medium => 6,
BtcFeePriority.low => 24,
};