Confirms using an item, if using the item causes it to become soulbound. Usable in response to the USE_BIND_CONFIRM which fires when the player attempts to use a "Bind on Use" item.
See also Item functions.
Signature:
ConfirmBindOnUse()
This function does not prompt the user for confirmation before its results take effect -- that behavior is provided by the default UI, and this function is called from the confirmation dialog