Summary:
Default image bundles for architectures given in create universe are sometimes not present. This causes a go error on trying to access index that does not exist. This change throws the API error instead

Original commit: e1e83ea6bc35bc978b68842a61606d70c1d90558 / D40749

Test Plan: Manually test

Reviewers: skurapati

Reviewed By: skurapati

Subscribers: yugaware

Differential Revision: https://phorge.dev.yugabyte.com/D40763