Support WyW 2 static evaluation contract

[Anber]

Summary

• Migrates Linaria's direct WyW dependencies and examples to @wyw-in-js/*@2.0.0-alpha.1.
• Updates core/react/atomic processors to use the WyW 2 processor static evaluation contract.
• Adjusts the testkit fixture setup for the new evaluator options and entrypoint cache shape.

Notes

This PR is paired with the WyW 2 alpha static evaluation architecture work. The Linaria runtime metadata shape is preserved, but static semantics now come from processor implementations instead of transform-core heuristics.

Validation

• pnpm sp:check
• pnpm --filter @linaria/core --filter @linaria/react --filter @linaria/atomic --filter @linaria/stylelint --filter @linaria/testkit typecheck
• pnpm --filter @linaria/testkit test
• pnpm --filter @linaria/core --filter @linaria/react --filter @linaria/atomic --filter @linaria/stylelint build
• Husky pre-commit ran pnpm check:all successfully.

@linaria/testkit still prints WyW runtime require fallback warnings during eval and Jest reports a forced worker exit after passing tests; those warnings are pre-existing test behavior under the new evaluator diagnostics.

[changeset-bot]

🦋 Changeset detected

Latest commit: 1278af2

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 12 packages

Name	Type
@linaria/atomic	Patch
@linaria/core	Patch
@linaria/react	Patch
@linaria/stylelint	Patch
@linaria/testkit	Patch
linaria-website	Patch
linaria	Patch
vpssr-linaria-solid-example	Patch
esbuild-example	Patch
rollup-example	Patch
vite-example	Patch
webpack5-example	Patch

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