fix(runtime): avoid dead require bootstrap

[LingyuCoder]

Summary

• avoid emitting the Rspack require bootstrap when module is used but no module factory table exists
• remove the resulting dead module cache and undeclared module-table reference from Rslib-style static CommonJS output
• add regression coverage for asset output using runtimeMode: "rspack"

Related links

• feat(core): enable Rspack runtime mode by default rslib#1806 (comment)

Checklist

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

Validation

• cargo fmt --all --check
• local development binding build
• rstest --project base -t 'rslib/no-dead-require-bootstrap' Config.part3.test.js RuntimeModeConfig.part3.test.js
• rstest --project base -t 'runtime/runtime-mode' RuntimeModeConfig.part1.test.js RuntimeModeConfig.part2.test.js RuntimeModeConfig.part3.test.js

[github-actions]

📦 Binary Size-limit

Comparing 27a46a5 to chore: migrate Git hooks to Rstack CLI (#14989) by Jiahan Chen

🙈 Size remains the same at 66.74MB

[github-actions]

Rsdoctor Bundle Diff Analysis

Found 5 projects in monorepo, 0 projects with changes.

📊 Quick Summary

Project	Total Size	Gzip Size	Change	Gzip Change
popular-libs	1.7 MB	552.1 KB	0	0
react-10k	5.6 MB	1.3 MB	0	0
react-1k	823.1 KB	217.0 KB	0	0
ui-components	4.9 MB	1.4 MB	0	0
react-5k	2.7 MB	663.8 KB	0	0

Generated by Rsdoctor GitHub Action

[chatgpt-codex-connector]

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[codspeed]

Merging this PR will not alter performance

✅ 46 untouched benchmarks
⏩ 47 skipped benchmarks¹

---

_{Comparing seal/remove-dead-require-bootstrap (27a46a5) with main (d7c037a)}

Footnotes

1. 47 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩