Fix Height Being Set to Default in Tag Teams (Resolves #1022)

For some reason, when a player is added, their height gets set to MT_PLAYER's height. Not sure what the purpose of the code is, but it does exist. Now, normally this doesn't persist and instead gets overwritten by the player's actual height in-game. However, this never happens when entering the game via a Tag Team on the CSS, as seen in #1022, because the skin is actually set before the player is added. So I changed it to set the player's height to their current skin's height. In netgames, it will instead be set to Sonic's height as CL_ClearPlayer is called beforehand and resets your skin to zero. Hopefully this won't cause any desyncs.