David Taylor 834ea70b1c
DEV: Improve postcss error handling (#31420)
Followup to 087e8e4bdb53f71930ec5c930c463c37dd2bd58d

- Fixes the variable-prefixer so it doesn't explode when the input is
unparseable
- Add URL polyfills so that postcss can print its errors properly
- Catch postcss errors in the same way as sass errors
2025-02-20 16:48:22 +00:00
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