test(e2e): remove temporary plugin

[chenjiahan]

Summary

Deleted the fix-react-refresh-in-rsbuild plugin, which was a temporary solution to address HMR issues with the css-loader. This cleanup simplifies the codebase and removes a workaround specific to the repository.

Related Links

web-infra-dev/rspack#5723

Checklist

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

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[Copilot]

Pull Request Overview

This PR removes a temporary plugin used to patch HMR issues with the CSS loader and cleans up an unused type import and option.

• Remove the fix-react-refresh-in-rsbuild plugin hook from the dev script
• Delete the unused LogLevel import and logLevel option in console helper

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
e2e/scripts/shared.ts	Removed temporary HMR workaround plugin setup
e2e/scripts/helper.ts	Deleted unused LogLevel import and logLevel field

Comments suppressed due to low confidence (2)

e2e/scripts/helper.ts:79

• Ensure there are no remaining references to logLevel in the codebase or tests—remove or update them to avoid lingering type errors.

  keepAnsi?: boolean;