chore(deps): upgrade chokidar to v5

[Timeless0911]

Summary

Upgrade chokidar in @rslib/core from v4 to v5 and update the restart watcher to load the package via await import('chokidar').

This removes the old compiled/prebundle wiring for chokidar, so the core package bundles the dependency directly while keeping the existing watch and restart behavior unchanged.

Related Links

close: #1510

Checklist

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

[Copilot]

Pull request overview

Upgrade chokidar usage in @rslib/core by moving from the prebundled/compiled wiring to bundling chokidar directly, while keeping restart-watch behavior the same.

Changes:

• Bump chokidar dependency from v4 to v5.
• Remove compiled/prebundle/externals wiring for chokidar.
• Update restart watcher to dynamically import chokidar and use its default export.

Reviewed changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
packages/core/tsconfig.json	Removes TS path alias that redirected chokidar to the compiled copy.
packages/core/src/restart.ts	Switches dynamic import usage to pull default from chokidar.
packages/core/rslib.config.ts	Stops treating chokidar as an external compiled dependency so it can be bundled.
packages/core/prebundle.config.mjs	Removes chokidar from the prebundle dependency list.
packages/core/package.json	Upgrades chokidar version to v5.

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported