Channeled mana potions will last 50% longer with this embellishment. Add support for it.

https://www.wowhead.com/item=191534/potion-absorption-inhibitor

This embellishment doesn't work with channeled mana potions right now. Leave this in its own branch if/until it changes.

Closing this off since this still isn't the case in 10.1 and likely won't be in subsequent patches. If it does, I'll revisit. Leaving the branch in-tact for now.