noobaa-core: Account creation give error while noobaa-db pod running node is power down

Environment info

• ODF 4.9 and 4.10
• Platform: OCP 4.9.31

Actual behavior

1. account create fails with in-appropriate message when noobaa-db pod is in Init state

error: "this.begin() must be called before sending queries on this transaction' 

Expected behavior

1. account create fails should give Appropriate message when noobaa-db pod is in Init state. like:

Cannot connect to noobaa-db pod