fix: validate-returns-empty-trait-list-if-persistence-false

[Zaimwa9]

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Changes

• returns empty traits list instead of 400 if trait_persistence_allowed is false

How did you test this code?

• Added unit test

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3 Skipped Deployments

Name	Status	Preview	Comments	Updated (UTC)
docs	⬜️ Ignored (Inspect)	Visit Preview		Apr 29, 2025 7:26am
flagsmith-frontend-preview	⬜️ Ignored (Inspect)	Visit Preview		Apr 29, 2025 7:26am
flagsmith-frontend-staging	⬜️ Ignored (Inspect)	Visit Preview		Apr 29, 2025 7:26am

[github-actions]

Docker builds report

Image	Build Status	Security report
ghcr.io/flagsmith/flagsmith-e2e:pr-5398	Finished ✅	Skipped
ghcr.io/flagsmith/flagsmith-api-test:pr-5398	Finished ✅	Skipped
ghcr.io/flagsmith/flagsmith-api:pr-5398	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith-frontend:pr-5398	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith:pr-5398	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith-private-cloud:pr-5398	Finished ✅	Results ✅