fix(Hackathon): Platform Hub: inverted stale counts

[khvn26]

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Changes

Makes stale flag counters not inverted.

How did you test this code?

Unit tests.

[vercel]

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Project	Deployment	Actions	Updated (UTC)
flagsmith-frontend-preview	Ready	Preview, Comment	Feb 12, 2026 11:13am
flagsmith-frontend-staging	Ready	Preview, Comment	Feb 12, 2026 11:13am

1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
docs	Ignored		Feb 12, 2026 11:13am

[github-actions]

Docker builds report

Image	Build Status	Security report
ghcr.io/flagsmith/flagsmith-api-test:pr-6715	Finished ✅	Skipped
ghcr.io/flagsmith/flagsmith-e2e:pr-6715	Finished ✅	Skipped
ghcr.io/flagsmith/flagsmith:pr-6715	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith-private-cloud:pr-6715	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith-frontend:pr-6715	Finished ✅	Results ✅

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.23%. Comparing base (220ee58) to head (ce4b584).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6715      +/-   ##
==========================================
- Coverage   98.23%   98.23%   -0.01%     
==========================================
  Files        1311     1311              
  Lines       48480    48474       -6     
==========================================
- Hits        47623    47617       -6     
  Misses        857      857              

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