New Code filter for branches of Application filters out all issues

Filter for New Code when viewing a branch of an Application filters out all issues.

Steps to reproduce:

• Create a couple of projects, scan the main branch and then a second branch of each
• Create an Application
• In the Application, create a branch that aggregates the second branches from the projects
• Add a bug to the branch of one of the projects and re-scan to create a bug in the new code period of the project branch and therefore the Application branch
• Navigate to the New Code tab of the Application branch
• Click on the number of any issue type.
• No results -> expected behaviour issues from new code period

The filtering on the Main branch of the Application is fine; this only seems to apply to non-main branches

Technical notes:
Main problem is inside ES query that we build. When querying for an application branch to Elasticsearch, project branch uuid is pass to a project main branch field, which is invalid hence we get no result.