Improve Rspack Debugging Experience

[hardfist]

provide an easy way to debug specific regressed tests

[hardfist]

Easy way to debug xxxId in function without moduleGraph & Compilation

[hardfist]

fix webpack's flaky test

webpack's watch tests is highly flaky and should be fixed

• https://github.com/web-infra-dev/rspack/actions/runs/15921216248/job/44908652198

[hardfist]

migrate webpack's test runner to rspack's test runner

maybe we should do this after migration to rstest first