Single VPP app doesn't show up in Self-service, requires multiple VPP apps

[jmwatts]

Fleet version: v4.68.0

Web browser and operating system: n/a

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💥  Actual behavior

No VPP app shows when there's only one

🧑‍💻  Steps to reproduce

1. Only add one VPP app to a team and make it available for Self-service
2. Open Self-service on the host
3. Notice no VPP app shows
4. Add an additional VPP app
5. Refresh Self-service on the host
6. Notice VPP apps both show up

🕯️ More info (optional)

Self-service is showing what is returned in the API response so this appears to be a back-end bug

[mostlikelee]

Verified.

Bear is the only VPP app in example. Chrome/Brave are FMA apps.

[fleet-release]

In the cloud city,
Single VPP app unseen,
New fix brings it light.