feat(cli-service): support contenthash in lib build chunkFilename

[yaojiafeng]

Allow users to configure contenthash for chunk files via vue.config.js when building in library mode.

Fixes #7476

What kind of change does this PR introduce? (check at least one)

• Bugfix
• Feature
• Code style update
• Refactor
• Docs
• Underlying tools
• Other, please describe:

Does this PR introduce a breaking change? (check one)

• Yes
• No

Other information:

[yaojiafeng]

Hi maintainers,

The ci/circleci: e2e check is failing due to a Node.js version incompatibility in the CI environment, which is unrelated to my changes.

Root Cause

The CI environment is using Node.js 16.13.1, but the test suite is trying to install minimatch@10.1.2 which requires Node 20+:

My Changes

This PR only modifies:

• packages/@vue/cli-service/lib/commands/build/resolveLibConfig.js
• packages/@vue/cli-service/__tests__/buildLib.spec.js

Failing Tests Analysis

The failing tests in ci/circleci: e2e are:

• eslintMigrator.spec.js - ESLint upgrade tests
• mochaPlugin.spec.js - Mocha plugin tests
• mochaPluginVue3.spec.js - Mocha Vue3 tests
• tsMochaPlugin.spec.js - TypeScript Mocha tests

None of these tests are related to my library build changes. They are failing because of dependency installation issues caused by the Node version mismatch, not because of any code issues in my PR.

The test that actually validates my changes (buildLib.spec.js) is tested in the ci/circleci: tests check, which has passed successfully ✅.

Request

Could you please review the other CI results (especially ci/circleci: tests which passed) or consider re-running the ci/circleci: e2e check in an updated environment?

Thank you for your time! 🙏