Improve stack trace styler throws on parse error

[olivroy]

Progress towards #1116

For style_text() and the addins

Before

This PR:

for style_file() and friends

before

This PR

for style_dir()

On purpose, I malformed 2 files to have a feel of how many malformed files feel. It may be too verbose as many lines are there, but I would argue it is unlikely someone has multiple malformed files they want to style

[github-actions[bot]]

This is how benchmark results would change (along with a 95% confidence interval in relative change) if c6944ab9c4bbb89129965119451f0aba3d6bc379 is merged into main:

• :heavy_check_mark:cache_applying: 174ms -> 176ms [-1.49%, +3.51%]
• :heavy_check_mark:cache_recording: 560ms -> 556ms [-2.28%, +0.88%]
• :heavy_check_mark:without_cache: 1.03s -> 1.03s [-1.34%, +0.57%]

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