Add caniuse links to hyphenate-character and hyphenate-limit-chars

[bartveneman]

Noticed these were missing while doing some frontend archeology.

There are also dozens of other caniuse links missing. What would be the preferred way to update these? Add them to this PR or create several smaller PRs?

[ddbeck]

Hi @bartveneman, thanks for your interest in helping out! The wf- features on caniuse are actually imported from web-features, so these links end up being self-referential. I don't think we want to create those links, but that's not currently communicated anywhere. I've opened #4345 for a better error message.

There are other features where mappings might exist, but it's not exactly straightforward. We have some guidance in our docs to help you learn how to set those values. There are two further complications worth mentioning:

1. Some caniuse features are currently unmappable because the web-features ID represents a larger (or smaller) feature than caniuse covers (especially for older features). To map those, we need to be able to merge features and mint historical features; this is currently blocked by Demo: merge authoring #4083 and related work.

2. There are a couple of WIP PRs, which you'll probably want to avoid duplicating:

   • Add caniuse links where the IDs are different #3301
   • Add caniuse links or comments where the (normalized) IDs match #3300

If you're still interested in helping, running npx tsx ./scripts/caniuse.ts from the root of the project can show you a Markdown formatted list of caniuse features and whether they're mapped. If you're still keen to contribute, a PR of any size is welcome, though small PRs (yes, even one liners) tend to get merged more quickly. Limiting yourself to 3-5 open PRs at a time is nice too.

If there are questions, issues (or PRs with guesses) are also welcome. Thank you!