feat(builder-rsbuild): support Storybook change detection

[fi3ework]

Summary

This adds Storybook changeDetection support to storybook-builder-rsbuild without requiring any new Rspack API.

What changed

• add onModuleGraphChange(cb) support to the builder
• convert Rspack Compilation.moduleGraph into Storybook's builder-agnostic ModuleGraph
• emit graph updates from onDevCompileDone for initial compile and rebuilds
• exclude story modules from lazyCompilation when features.changeDetection is enabled by composing lazyCompilation.test
• add regression tests for graph construction, listener lifecycle, multistats merge, and lazyCompilation matching

Validation

• pnpm exec rstest 'packages/builder-rsbuild/tests/build-module-graph.test.ts' 'packages/builder-rsbuild/tests/index.test.ts' 'packages/builder-rsbuild/tests/preview/iframe-rsbuild.config.test.ts'
• manual canary validation against storybook@0.0.0-pr-34370-sha-b4eae34c
  • modify and remove-from-graph scenarios produced modified/affected statuses in the Storybook UI
  • direct file deletion that causes compile failure does not continue to update statuses, which matches the current canary behavior

Notes

• root pnpm.overrides and the sandboxes/react-18 features.changeDetection flag are intentionally included on this preview branch to keep canary validation reproducible while debugging with Storybook maintainers
• these temporary canary/debugging changes should be cleaned up before merging to main

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