docs: update terminology and clarify compilation scope

[chenjiahan]

Summary

Reorganized sections to focus on "Compilation scope" instead of "Downgrade method," providing clearer explanations for Rsbuild's categorization and rationale.

Checklist

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

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[Copilot]

Pull Request Overview

This PR refines terminology around “降级”/“downgrade” to “编译范围”/“Compilation scope” and updates examples to illustrate the new object-based include filter syntax.

• Renamed section headings and list labels for clarity in both Chinese and English docs.
• Clarified default SWC transformation scope and rationale.
• Replaced simplistic path.resolve examples with an advanced filter object to exclude node_modules.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
website/docs/zh/guide/advanced/browser-compatibility.mdx	Updated headings, lists, and clarified default SWC scope; added filter example using { and: […], not: … }
website/docs/zh/config/source/include.mdx	Adjusted heading terminology for monorepo modules
website/docs/en/guide/advanced/browser-compatibility.mdx	Mirrored terminology and example updates in English
website/docs/en/config/source/include.mdx	Updated heading and terminology for monorepo modules

Comments suppressed due to low confidence (4)

website/docs/en/guide/advanced/browser-compatibility.mdx:145

• [nitpick] Lowercase make after the comma or split into two sentences for correct grammar: e.g., ..., and make Rsbuild perform extra compilation for this dependency.

When you find that a third-party dependency causes compatibility issues, you can add this dependency to Rsbuild's [source.include](/config/source/include) config, Make Rsbuild do extra compilation for this dependency.

website/docs/en/config/source/include.mdx:94

• [nitpick] Heading uses “libraries” but the text refers to “modules”—consider using a single term (e.g., “modules”) for consistency.

## Compile libraries in monorepo

website/docs/zh/guide/advanced/browser-compatibility.mdx:178

• Consider adding a brief note explaining this object-based include filter syntax (and with not) so readers understand how it excludes node_modules.

{ and: [packagesDir, { not: /[\\/]node_modules[\\/]/ }], }

website/docs/en/guide/advanced/browser-compatibility.mdx:178

• Add a short explanation of the { and: […], not: … } filter syntax to help readers unfamiliar with this advanced include pattern.

{ and: [packagesDir, { not: /[\\/]node_modules[\\/]/ }], }