JCMA fails to migrate boards owned by users that don't have 'Browse Project' permissions

Issue Summary

JCMA fails to migrate boards owned by users that don't have permission to browse the project being migrated. The error is misleading as it will indicate that boards is a Cross-project boards

JCMA pre-migration summary logs show:

Cross-project board Boards that reference multiple projects are not supported via migration. This board will not be migrated. If you require this board, re-create the board in your cloud site. To pull out the JQL for board filters, run SQL queries from this page: https://confluence.atlassian.com/jirakb/troubleshooting-errors-and-non-migrated-entities-with-the-jira-cloud-migration-assistant-1021239878.html

Steps to Reproduce

1. Have a single project board be owned by a user with no 'Browse Project' permissions for the project associated with the board
2. Migrate the project that contains the board using JCMA

Expected Results

JCMA should migrate that project and board

Actual Results

JCMA finishes, but board will not be migrated and listed as a 'Cross-project' board in pre-migration logs

Workaround

Make sure to board owner has permissions to browse project associated with board