chore(deps): update Rspack to 2.0.0-rc.0

[chenjiahan]

• Update Rspack/Rsbuild to 2.0.0-rc.0
• Disable split chunks in Rsbuild to better compare the size of a single bundle

[chatgpt-codex-connector]

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[Copilot]

Pull request overview

This PR upgrades the benchmarking workspace’s Rspack/Rsbuild toolchain to the 2.0.0-rc.0 release candidate series and adjusts Rsbuild app configs to generate a single (non-split) bundle for easier size comparison in benchmark outputs.

Changes:

• Bump @rspack/* and @rsbuild/* dependencies to 2.0.0-rc.0 (plus resulting lockfile updates).
• Disable chunk splitting in Rsbuild configs for the React benchmark apps.
• Normalize the apps/10000 Rsbuild output.distPath format to match the other apps.

Reviewed changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
package.json	Updates Rsbuild/Rspack versions to 2.0.0-rc.0.
pnpm-lock.yaml	Regenerates lockfile to reflect the dependency upgrades and transitive changes.
apps/1000/rsbuild.config.mjs	Disables chunk splitting for Rsbuild production builds.
apps/3000/rsbuild.config.mjs	Disables chunk splitting for Rsbuild production builds.
apps/5000/rsbuild.config.mjs	Disables chunk splitting for Rsbuild production builds.
apps/10000/rsbuild.config.mjs	Disables chunk splitting and aligns distPath shape with other apps.

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