Quests - Kudos issuance fails when a user already holds the same Kudos issued from a different Quest

**Describe the bug**

When a previously uncompleted Quest is successfully completed and the user goes on to claim the associated Kudos, if the user has already received that Kudos from a different Quest, then the issuance fails with the following error:

> "Sorry but the coupon for a free kudos has been used already."

**To Reproduce**

- Find a Kudos that has multiple Quests associated
- Complete more than one of those Quests

**Expected behavior**
- The user should receive multiples of the same Kudos so long as the Kudos is still mintable.