refactor: react contract tests

[joker23]

This PR will:

• move some variable around for the react SDK so it is a bit more readable in my opinion

Context

This PR is the result of some exploration on how to make the react contract more idiomatic to react. A few things that I looked into:

• changing evaluation to useVariation flags
• changing some of the internal commands to use react hooks
• removing some of the useRef

Ultimately, most of the exploration did not yield a good result because they require very verbose changes. A lot of the code consolidation, I think, should be consolidated into the shared contract test tooling package.

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Note

Medium Risk
Moves client/handler bookkeeping from React state/refs to module-level globals with manual re-rendering, which could introduce lifecycle/state-leak issues across mounts or tests. Changes are limited to contract-test harness code, but affect client creation/deletion and command routing timing.

Overview
Refactors the React contract-test harness to manage clients and command handlers via module-level Maps/arrays instead of useRef/component state, triggering UI updates via a simple render tick.

Client creation/deletion now updates global clientRecords and uses a shared onReady resolver map to coordinate when ClientInstance has registered its command handler before returning the client id. Also removes a stale comment in ClientEntity.ts.

^{Written by Cursor Bugbot for commit 14cef1f. This will update automatically on new commits. Configure here.}

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[github-actions]

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[github-actions]

@launchdarkly/js-client-sdk size report
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@launchdarkly/browser size report
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[github-actions]

@launchdarkly/js-client-sdk-common size report
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Uncompressed size: 202741 bytes

[joker23]

@cursor review

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[devin-ai-integration]

✅ Devin Review: No Issues Found

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