message: Shorten InstrDefData when printing bytecode
  Summary: It is too verbose and non-determistic (uses `HashMap`).
diff: @@ -656,8 +656,8 @@ impl BcInstrArg for SmallMap<FrozenValue, FrozenValue> {
  }
  impl BcInstrArg for InstrDefData {
  - fn fmt_append(param: &Self, _ip: BcAddr, f: &mut dyn Write) -> fmt::Result {
  - write!(f, " {:?}", param)
  + fn fmt_append(_param: &Self, _ip: BcAddr, f: &mut dyn Write) -> fmt::Result {
  + write!(f, " InstrDefData")
  }
  fn visit_jump_addr(_param: &Self, _consumer: &mut dyn FnMut(BcAddrOffset)) {}
  