feat: exposes environments in tools.rspack

[chenjiahan]

Summary

Currently, tools.rspack can access the current environment's context, but in some cases it may need to access all environment contexts.

This PR exposes environments in tools.rspack and tools.bundlerChain:

• Add environments parameter to chain utils functions
• Update documentation to include environments context

Checklist

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

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[Copilot]

Pull Request Overview

This PR exposes the environments parameter in tools.rspack and tools.bundlerChain configuration functions, allowing users to access context information for all environments, not just the current one.

• Adds environments: Record<string, EnvironmentContext> to ModifyChainUtils type and related utilities
• Updates documentation in English and Chinese for both tools.rspack and tools.bundlerChain
• Adds JSDoc comments to various hook type definitions for consistency

Reviewed Changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
packages/core/src/types/hooks.ts	Adds environments field to ModifyChainUtils type and JSDoc comments to multiple hook parameter types for documentation consistency
packages/core/src/types/context.ts	Updates comment for environments field in InternalContext to be more concise
packages/core/src/provider/rspackConfig.ts	Updates getChainUtils to accept and include environments parameter; refactors generateRspackConfig to use environmentName parameter name for clarity
packages/core/src/provider/initConfigs.ts	Refactors parameter name from environment to environmentName in map function for improved clarity
packages/compat/webpack/src/webpackConfig.ts	Updates webpack provider's getChainUtils to accept and pass through environments parameter
website/docs/en/config/tools/rspack.mdx	Adds documentation for new environments parameter and improves wording for existing environment parameter description
website/docs/en/config/tools/bundler-chain.mdx	Adds documentation for new environments parameter and improves wording for existing environment parameter description
website/docs/zh/config/tools/rspack.mdx	Adds Chinese documentation for new environments parameter
website/docs/zh/config/tools/bundler-chain.mdx	Adds Chinese documentation for new environments parameter
website/docs/en/shared/onBeforeStartDevServer.mdx	Simplifies comment description for environments parameter
website/docs/zh/shared/onBeforeStartDevServer.mdx	Simplifies comment description for environments parameter

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