chore(deps): upgrade Rslib to v1.0.0-beta.0

[chenjiahan]

Summary

This PR upgrades Rslib to v1.0.0-beta.0 to adopt its latest pre-release behavior and compatibility updates.

When define.lib is omitted, Rstack now returns an empty Rslib config and relies on Rslib's new default library output instead of injecting lib: [{}].

Related Links

• https://github.com/web-infra-dev/rslib/releases/tag/v1.0.0-beta.0

[coderabbitai]

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📒 Files selected for processing (2)

• packages/rstack/src/rslibConfig.ts
• pnpm-workspace.yaml

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📝 Walkthrough

Walkthrough

The configuration loader now returns {} when no lib configuration is supplied, instead of creating a default lib array. The workspace catalog also updates @rslib/core from ~0.23.2 to ~1.0.0-beta.0.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the main change: upgrading Rslib to v1.0.0-beta.0.
Description check	✅ Passed	The description matches the changeset and explains the upgrade plus the config behavior change.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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• Create stacked PR
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🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chenjiahan/chore-upgrade-rslib-1-beta

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[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Don't treat explicit falsy lib configs as omitted

When a JavaScript config calls define.lib(null) or define.lib(false), configs.lib is explicitly present but this path now returns the omitted-config default {} and lets Rslib build the default library instead of validating the bad value. Since this upgrade relies on Rslib's new distinction between omitted lib and invalid explicit values, check for undefined/presence rather than all falsy values so invalid configs still fail fast.

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