fix: css comments should be discarded irrespective of cssUrl

[alan-agius4]

I'm submitting a...

[x] Bug Fix
[ ] Feature
[ ] Other (Refactoring, Added tests, Documentation, ...)

Checklist

• Commit Messages follow the Conventional Commits pattern
  • A feature commit message is prefixed "feat:"
  • A bugfix commit message is prefixed "fix:"
• Tests for the changes have been added

Description

fix: css comments should be discarded irrespective of cssUrl

Does this PR introduce a breaking change?

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