Use newest records for test webhooks [RUN ALL RSPEC] [RUN AS-IF-FOSS]

What does this MR do?

!52646 (merged) introduced a change to the order of some test webhook data in order to optimise the queries.

This change makes the remaining test webhooks consistently use the newest records instead of the oldest records in their data payloads even though there is no performance gain.

• Issue: #290116 (closed)

Does this MR meet the acceptance criteria?

Conformity

• [-] Changelog entry
• [-] Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• [-] Database guides
• [-] Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• [-] Tested in all supported browsers
• [-] Informed Infrastructure department of a default or new setting change, if applicable per definition of done

Related to #290116 (closed)