chore: 🤖 disable css erorr

[IWANABETHATGUY]

Related issue (if exists)

Summary

🤖 Generated by Copilot at 09b1bed

Improved CSS error handling in rspack_plugin_css crate. Removed unused code and imports, and ignored non-fatal errors to speed up processing and avoid unnecessary warnings.

Walkthrough

🤖 Generated by Copilot at 09b1bed

• Remove unused imports of error and diagnostic types (link)
• Simplify error handling for CSS parsing by returning an internal error with the original message and no diagnostics, instead of converting the errors into warnings (link, link)
• Comment out unused css_parse_error_to_diagnostic function that performed the conversion (link)

[changeset-bot]

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Latest commit: ad001b2

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