function _load_crypto() {
  return _crypto = _interopRequireWildcard(__webpack_require__(168));
}
find the highest hoisting point for the given HoistManifest.
algorithm: a nohoist package should never be hoisted beyond the top of its branch, i.e.
the first element of its parts. Therefore the highest possible hoisting index is 1,
unless the package has only 1 part (itself), in such case returns null just like any hoisted package