Fix - slugify - keep Unicode letters and numbers in slugs

slugify() removed every non-ASCII character via [^\w-], so CJK or accent-only labels collapsed to an empty string. VueUiRidgeline derives each datapoint's id, legend key and gradient element id from slugify(name), so distinct non-ASCII series shared one id: merged legend entries, broken segregation toggles and colliding SVG gradient ids. Match Unicode letters and numbers instead; punctuation and symbol stripping is unchanged.

fix(VueUiXy): path and dot transitions

chore(deps): bump undici from 7.25.0 to 7.28.0

Bumps [undici](https://github.com/nodejs/undici) from 7.25.0 to 7.28.0.
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](https://github.com/nodejs/undici/compare/v7.25.0...v7.28.0)

---
updated-dependencies:
- dependency-name: undici
dependency-version: 7.28.0
dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

refactor(VueUiXy): optimisations

chore(deps-dev): bump form-data from 4.0.5 to 4.0.6

Bumps [form-data](https://github.com/form-data/form-data) from 4.0.5 to 4.0.6.
- [Release notes](https://github.com/form-data/form-data/releases)
- [Changelog](https://github.com/form-data/form-data/blob/master/CHANGELOG.md)
- [Commits](https://github.com/form-data/form-data/compare/v4.0.5...v4.0.6)

---
updated-dependencies:
- dependency-name: form-data
dependency-version: 4.0.6
dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>