ci: fixing contract test breaking due to async hooks

[joker23]

BEGIN_COMMIT_OVERRIDE
ci: fixing contract test breaking due to async hooks

fix(sdk-client): executeAfterTrack ordering
END_COMMIT_OVERRIDE

---

Note

Medium Risk
Changes runtime hook invocation order for afterTrack (a behavioral API contract); impact is limited to apps using multiple track hooks, but ordering semantics are intentional for harness alignment.

Overview
Fixes contract-test hook ordering failures by aligning afterTrack execution with registration order and serializing harness callback posts.

In HookRunner, executeAfterTrack now iterates hooks forward (same as beforeEvaluation / beforeIdentify) instead of reverse like afterEvaluation. HookRunner unit expectations for track hook order are updated accordingly.

Contract-test TestHook instances now share a HookPostQueue via TestHook.forClient, chaining async fetch callbacks so the harness sees stable arrival order; BaseTestHook routes evaluation/track posts through enqueuePost. Browser, Electron, React, React Native, and server-node contract entities use the factory. Hook-order-related lines are removed from several suppressions.txt files now that behavior matches the harness.

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[github-actions]

@launchdarkly/js-sdk-common size report
This is the brotli compressed size of the ESM build.
Compressed size: 26389 bytes
Compressed size limit: 29000
Uncompressed size: 129320 bytes

[github-actions]

@launchdarkly/browser size report
This is the brotli compressed size of the ESM build.
Compressed size: 179496 bytes
Compressed size limit: 200000
Uncompressed size: 830875 bytes

[github-actions]

@launchdarkly/js-client-sdk size report
This is the brotli compressed size of the ESM build.
Compressed size: 31870 bytes
Compressed size limit: 34000
Uncompressed size: 113696 bytes

[github-actions]

@launchdarkly/js-client-sdk-common size report
This is the brotli compressed size of the ESM build.
Compressed size: 38516 bytes
Compressed size limit: 39000
Uncompressed size: 211129 bytes

[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no potential bugs to report.

View in Devin Review to see 2 additional findings.