`/api/v1/fleet/mdm/profiles/batch` should not generate activity when nothing changed

[pacamaster]

Fleet version: <!-- Copy this from the "My account" page in the Fleet UI, or run fleetctl --version --> Fleet 4.54.0 Web browser and operating system: current browser/OS

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💥  Actual behavior

Audit log is always showing 3 profiles messages

🧑‍💻  Steps to reproduce

1. Apply empty configuration profiles via /api/v1/fleet/mdm/profiles/batch
2. Apply empty configuration profiles via /api/v1/fleet/mdm/profiles/batch again
3. Notice activity log has 3 profiles messages even though nothing has changed

🕯️ More info (optional)

Other entries might come up in the feed that do not apply to the Fleet environment.

Demo video

https://www.loom.com/share/8b75cbd8e7394c12ac6b56746b72c244