Follow-up from "Change state to integer for issuables - Patch 2 of 3"

The following discussion from !18099 (merged) should be addressed:

• @patrickbajao started a discussion: (+2 comments)

  This is confusing me, ha. 😕

  Why do we need to wrap the value in Array? Based on the use case of this method in line 164 above, key should always be a single item. 🤔