Of course, we can still not know if Okrand was aware of the ending of
the movie, maybe not knowing that there was a female version of
chancellor needed. But he translated a dialogue for a scene wit that
female chancellor, and the script was very clear. Unfortunately, the
word Chancellor did not appear in the translation.
Near the end of the movie, when the sniper shoots at the Federation President, someone (I think it was Kerla) shouts {Qang yIQan!} (subtitled as "Protect the Chancellor!") as her bodyguards surround her. So we know that {Qang} is gender-neutral.