Lock fungible tokens on another's behalf with valid lock allowance

[sentientforest]

LockToken does not currently support locking fungible tokens unless the calling user is the owner.

https://github.com/GalaChain/sdk/blob/main/chaincode/src/locks/lockTokens.ts#L99C1-L104C6

    // for initial support of fungible tokens, require owner to be the caller.
    if (tokenInstanceKey.isFungible()) {
      throw new NotImplementedError("LockToken is not supported for fungible tokens", {
        instanceKey: tokenInstanceKey.toStringKey()
      });
    }

This issue tracks testing and adding support for this functionality.