fix(5044/mvfsv): handle deleted feature states

[gagantrivedi]

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Changes

Add get_skip_create_audit_log on MultivariateFeatureStateValue to handle feature state delete
closes: #5044

How did you test this code?

Adds unit tests

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3 Skipped Deployments

Name	Status	Preview	Comments	Updated (UTC)
docs	⬜️ Ignored (Inspect)	Visit Preview		Jan 29, 2025 4:27am
flagsmith-frontend-preview	⬜️ Ignored (Inspect)	Visit Preview		Jan 29, 2025 4:27am
flagsmith-frontend-staging	⬜️ Ignored (Inspect)	Visit Preview		Jan 29, 2025 4:27am

[github-actions]

Docker builds report

Image	Build Status	Security report
ghcr.io/flagsmith/flagsmith-api-test:pr-5050	Finished ✅	Skipped
ghcr.io/flagsmith/flagsmith-e2e:pr-5050	Finished ✅	Skipped
ghcr.io/flagsmith/flagsmith-api:pr-5050	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith-frontend:pr-5050	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith:pr-5050	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith-private-cloud:pr-5050	Finished ✅	Results ✅

[github-actions]

Uffizzi Preview deployment-60381 was deleted.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.40%. Comparing base (ecd409b) to head (64b2c15).
Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5050   +/-   ##
=======================================
  Coverage   97.40%   97.40%           
=======================================
  Files        1193     1193           
  Lines       41763    41792   +29     
=======================================
+ Hits        40678    40707   +29     
  Misses       1085     1085           

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