chore: remove react-dom bundle in output

[islxyqwe]

This PR removes "react-dom/client" in the output bundle which included in v0.5.0.
also removes "react-dom/server".
reduced the result package size from 7,026.30 kB -> 5,276.59 kB (graphic-walker.es.js)

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Project	Deployment	Review	Updated (UTC)
graphic-walker	Ready	Preview, Comment	Dec 19, 2025 7:18am

[Copilot]

Pull request overview

This PR prevents react-dom sub-modules from being bundled into the library output, reducing the bundle size from 7,026.30 kB to 5,276.59 kB (graphic-walker.es.js).

• Adds "react-dom/client" and "react-dom/server" to the external modules list
• Adds corresponding global variable mappings (ReactDOMClient and ReactDOMServer) for UMD builds

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[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated no new comments.

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[ObservedObserver]

@codex review

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. Bravo.

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