VACMS-18005: Aging content tests

[dsasser]

Description

Relates to #18005

Testing done

Tested the bulk of our custom code for Aging Content, which covers the new Aging Content Advancedqueue Job Type.

QA steps

No manual QA. This is a test-only ticket.

Definition of Done

• Documentation has been updated, if applicable.
• Tests have been added if necessary.
• Automated tests have passed.
• Code Quality Tests have passed.
• Acceptance Criteria in related issue are met.
• Manual Code Review Approved.
• If there are field changes, front end output has been thoroughly checked.

Select Team for PR review

• CMS Team
• Public websites
• Facilities
• User support
• Accelerated Publishing