[FEATURE] Add a balance check for bank account during AIS flow

[Sarthak1799]

Feature Description

For the open banking AIS flow, we need to add a check o the available balance in the selected bank account while doing a payment. If the check fails, the payment should not go through.

Possible Implementation

Just a few type changes and a check in core should work

Have you spent some time checking if this feature request has been raised before?

• I checked and didn't find a similar issue

Have you read the Contributing Guidelines?

• I have read the Contributing Guidelines

Are you willing to submit a PR?

Yes, I am willing to submit a PR!