fix: collect custom template attributes in source candidates

[sonofmagic]

Summary

• Fix Tailwind CSS v4 @source source-candidate collection to reuse configured customAttributes, so component props such as t-class and t-class-* can generate CSS.
• Pass custom template attribute settings into Vite, Gulp, and Webpack source candidate collectors.
• Include custom attribute settings in the source candidate content cache key to avoid stale cross-config reuse.
• Add a Chinese patch changeset for weapp-tailwindcss.

Fixes #977.

Tests

• pnpm --filter weapp-tailwindcss exec vitest run test/bundlers/vite-source-candidates.unit.test.ts
• pnpm --filter weapp-tailwindcss exec vitest run test/bundlers/vite-source-candidates.unit.test.ts test/bundlers/webpack.v5.unit/source-candidate-cache.test.ts
• git diff --check

Notes

• pnpm --filter weapp-tailwindcss run build:tsc was attempted, but the current workspace fails on existing e2e/tools files outside the package rootDir and unrelated exact-optional-property type errors before reaching this change.

[changeset-bot]

🦋 Changeset detected

Latest commit: c964ca3

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

This PR includes changesets to release 3 packages

Name	Type
weapp-tailwindcss	Patch
@weapp-tailwindcss/build-all	Patch
@weapp-tailwindcss/website	Patch

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