fix: setting konnect flag before concurrent handling

[shivaygupta-dotcom]

Note: This PR is successor of attached PR: #428

Summary

https://github.com/Kong/deck/actions/runs/24771118558/job/72477519286

This PR fixes a data race which we got on above run of apply test from decK.

The SetKonnectFlag flag was previously being accessed and modified across goroutines, which made it unsafe. To address this, SetKonnectFlag is now executed once upfront, before any goroutines are spawned.

Additionally, graphqlRateLimitingCostDecorationCRUD.Delete has been updated to rely on a precomputed isKonnect field instead of calling IsKonnectMode() at runtime. This brings it in line with how other CRUD implementations already handle the same logic, and avoids repeated access to shared state.

Full changelog

• [Implement ...]
• [Fix ...]

Issues resolved

Fix #XXX

Documentation

• Link to the website documentation PR

Testing

• Unit tests
• E2E tests
• Manual testing on Universal
• Manual testing on Kubernetes

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 28.40%. Comparing base (99ca2f8) to head (aad4318).

Files with missing lines	Patch %	Lines
pkg/diff/diff.go	0.00%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #459      +/-   ##
==========================================
- Coverage   28.40%   28.40%   -0.01%     
==========================================
  Files         123      123              
  Lines       20722    20726       +4     
==========================================
  Hits         5887     5887              
- Misses      14204    14208       +4     
  Partials      631      631              

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