Invalid gindex calculation

[wemeetagain]

Describe the bug

import {ssz} from "@lodestar/types";

const {BeaconState} = ssz.phase0;
console.log(
  BeaconState.getPathInfo(["validators", 0, "activationEpoch"]).gindex === BeaconState.getPathInfo(["validators", 0, "pubkey"]).gindex
);
// true

Expected behavior

false

[ratankaliani]

Currently running into this - how do I calculate the gindices of these fields manually?

Trying to generate a merkle proof of these fields, but can't do so if the gindices are the same for the Validator container, as well as all of the fields within it.

[philknows]

Related to #328