fix: the --devtool CLI flag not work as expected

[Meet-student]

Summary

fix devtool cmd line not work and default value

Related links

• [Bug]: devtool cmdline not work #10721

Checklist

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

[netlify]

✅ Deploy Preview for rspack canceled.

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🔨 Latest commit	983bb89
🔍 Latest deploy log	https://app.netlify.com/projects/rspack/deploys/68726423c64d850008f500b1

[CLAassistant]

All committers have signed the CLA.

[codspeed-hq]

CodSpeed Performance Report

Merging #10880 will not alter performance

_{Comparing Meet-student:fix/10721 (983bb89) with main (9645e50)}

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A heads-up, this is a breaking change and it might affect your current performance baseline a bit. But here's the exciting part - it's packed with new, cool features and promises improved result stability 🥳!
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Summary

✅ 16 untouched benchmarks

[Meet-student]

webpack-cli development is "eval"， production is false

Current devtool Value

Cmd	Config	Env	Value
undefined	undefined	development	cheap-module-source-map
undefined	eval-cheap-module-source-map	development	eval-cheap-module-source-map
false	eval-cheap-module-source-map	development	source-map
undefined	undefined	production	source-map
undefined	source-map	production	source-map
eval	source-map	production	eval

@chenjiahan @hardfist @SyMind @CPunisher Help review again

[chenjiahan]

@Meet-student When CI fails, you don’t need to keep rebasing the master branch. You may need to check the CI error and fix it.

[Meet-student]

@Meet-student When CI fails, you don’t need to keep rebasing the master branch. You may need to check the CI error and fix it.

@chenjiahan done

[Meet-student]

Are these two CI related to this PR? @chenjiahan

[Meet-student]

run test:ci pass

[chenjiahan]

Thank you! ❤️