I have no idea at this poit, there used to be one somewhere...maybe I am thinking of RTR though. I'm not sure if it would work with TE, you'll need to check with Lusted.
Actually, now that I'm working on this mod again, I just realized this was intentional. Sorry for the confusion. The change comes from the Ferres Modding Legions pack, in which the legionary cavalry have javelins. Not sure why, I guess maybe they used them historically? Not sure....I like them though the way they are.