fix(5044): handle deleted feature state

[gagantrivedi]

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Changes

Update get_skip_create_audit_log on FeatureStateValue to return False if the FeatureState is deleted.

How did you test this code?

Adds/Updates unit tests

[vercel]

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3 Skipped Deployments

Name	Status	Preview	Comments	Updated (UTC)
docs	⬜️ Ignored (Inspect)			Jan 28, 2025 9:45am
flagsmith-frontend-preview	⬜️ Ignored (Inspect)			Jan 28, 2025 9:45am
flagsmith-frontend-staging	⬜️ Ignored (Inspect)			Jan 28, 2025 9:45am

[github-actions]

Docker builds report

Image	Build Status	Security report
ghcr.io/flagsmith/flagsmith-e2e:pr-5045	Finished ✅	Skipped
ghcr.io/flagsmith/flagsmith-api-test:pr-5045	Finished ✅	Skipped
ghcr.io/flagsmith/flagsmith-frontend:pr-5045	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith-api:pr-5045	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith:pr-5045	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith-private-cloud:pr-5045	Finished ✅	Results ✅

[github-actions]

Uffizzi Preview deployment-60340 was deleted.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.40%. Comparing base (fe69d55) to head (23b8618).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5045   +/-   ##
=======================================
  Coverage   97.40%   97.40%           
=======================================
  Files        1193     1193           
  Lines       41749    41763   +14     
=======================================
+ Hits        40664    40678   +14     
  Misses       1085     1085           

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