message: fix: add custom bigint pow to prevent transpilers incorrect conversion
diff: import { IntegerType, intToBigInt } from '@stacks/common';
  import { ClarityType } from '../constants';
  -const MAX_U128 = BigInt(2) ** BigInt(128) - BigInt(1);
  +const MAX_U128 = BigInt('0xffffffffffffffffffffffffffffffff'); // (2 ** 128 - 1)
  const MIN_U128 = BigInt(0);
  -const MAX_I128 = BigInt(2) ** BigInt(127) - BigInt(1);
  -const MIN_I128 = BigInt(-2) ** BigInt(127);
  +const MAX_I128 = BigInt('0x7fffffffffffffffffffffffffffffff'); // (2 ** 127 - 1)
  +// no signed (negative) hex support in bigint constructor
  +const MIN_I128 = BigInt('-170141183460469231731687303715884105728'); // (-2 ** 127)
  interface IntCV {
  readonly type: ClarityType.Int;
  