feat(fonts): generate fallbacks for all faces

[florian-lefebvre]

Changes

• RFC feedback
• Before this PR, we were generating 1 fallback @font-face definition based on the first font file we found for a given family
• However, it wasn't great because the fallback would only be accurate for a given weight/style which was defeating its purpose
• Now we generate a fallback for each weight/style
• Fixes a few cases where useless duplicate fallbacks could be created

Testing

Tests updated, tested manually

Docs

Changeset

[changeset-bot]

🦋 Changeset detected

Latest commit: a49b1d9

The changes in this PR will be included in the next version bump.

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[pkg-pr-new]

astro

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@astrojs/netlify

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commit: 5d89da8

[florian-lefebvre]

@jlarmstrongiv can you try the preview release?

[codspeed-hq]

CodSpeed Performance Report

Merging #13635 will not alter performance

_{Comparing feat/fonts-fallbacks-for-all-faces (a49b1d9) with main (6744842)}

Summary

✅ 6 untouched benchmarks

[jlarmstrongiv]

@florian-lefebvre is there an npm tag to install the prerelease?

[florian-lefebvre]

We use pkg.pr.new, the command is in a collapsed part of a message above:

npm i https://pkg.pr.new/astro@13635