Standalone should not be styled

[lorenzwalthert]

Closes #1134.

[github-actions[bot]]

This is how benchmark results would change (along with a 95% confidence interval in relative change) if acd0b469a88646318e9441a84d3ea29c51856f3a is merged into main:

•   :ballot_box_with_check:cache_applying: 167ms -> 168ms [-0.56%, +2.51%]
•   :ballot_box_with_check:cache_recording: 620ms -> 620ms [-0.43%, +0.54%]
•   :ballot_box_with_check:without_cache: 1.19s -> 1.19s [-0.22%, +0.3%]

Further explanation regarding interpretation and methodology can be found in the documentation.

[lorenzwalthert]

Thanks @olivroy. I will review later. exclude_files should be regex only (not regex and file path), otherwise it's too ambigous IMO.

[lorenzwalthert]

Closed in favor of #1135.