feat: pre-release of @launchdarkly/react-sdk

[joker23]

Note

Medium Risk
Moderate risk because it changes CI/release automation to actually publish packages/sdk/react when release-please marks it released, which could unintentionally ship if configuration is wrong.

Overview
Prepares @launchdarkly/react-sdk for publishing by wiring it into release automation and repo documentation.

This enables the release-react job in release-please.yml, adds packages/sdk/react to release-please-config.json and the release manifest, and updates packages/sdk/react/package.json to depend on published @launchdarkly/js-client-sdk/@launchdarkly/js-server-sdk-common versions instead of workspace:^. Repo docs are updated to list the React SDK (README.md, CONTRIBUTING.md), and the React workflow removes a leftover placeholder comment.

^{Written by Cursor Bugbot for commit b26edef. This will update automatically on new commits. Configure here.}

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[github-actions]

@launchdarkly/js-sdk-common size report
This is the brotli compressed size of the ESM build.
Compressed size: 25566 bytes
Compressed size limit: 26000
Uncompressed size: 125383 bytes

[github-actions]

@launchdarkly/browser size report
This is the brotli compressed size of the ESM build.
Compressed size: 172527 bytes
Compressed size limit: 200000
Uncompressed size: 802217 bytes

[github-actions]

@launchdarkly/js-client-sdk size report
This is the brotli compressed size of the ESM build.
Compressed size: 24539 bytes
Compressed size limit: 25000
Uncompressed size: 85098 bytes

[github-actions]

@launchdarkly/js-client-sdk-common size report
This is the brotli compressed size of the ESM build.
Compressed size: 22203 bytes
Compressed size limit: 24000
Uncompressed size: 115238 bytes

[joker23]

so we don't release svelte yet so I don't think it should participate in this graphic

[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 3 additional findings.

[joker23]

@cursor review

[cursor]

✅ Bugbot reviewed your changes and found no new issues!

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