chore: remove duplicated workspace definitions

[fi3ework]

Summary

This PR partially revert #302. After #302, we can't execute npx rslib build under any integrations tests cases.

This PR doesn't revert the goal of #302, just remove the workspaces field of the root package.json which is the monorepo field for npm(https://docs.npmjs.com/cli/v7/using-npm/workspaces), this also helps keep single source of truth of the monorepo definition (pnpm-workspace.yaml).

changesets uses https://github.com/Thinkmill/manypkg to find packages in a monorepo under the hood so it could correct resolve pnpm-workspace.yaml. check-dependency-version-consistency could also read it https://github.com/bmish/check-dependency-version-consistency#usage.

Related Links

Checklist

• Tests updated (or not required).
• Documentation updated (or not required).

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[Timeless0911]

I Learned

[codspeed-hq]

CodSpeed Performance Report

Merging #306 will improve performances by 12.81%

_{Comparing revet (932b8bb) with main (f9f1751)}

Summary

⚡ 1 improvements
✅ 3 untouched benchmarks

Benchmarks breakdown

	Benchmark	main	revet	Change
⚡	examples/react-component-bundle-false	325.7 ms	288.7 ms	+12.81%