docs: Update Svelte UX (dropping transitive date-fns dep)

Author: techniq

pnpm-lock.yaml

@@ -38,7 +38,7 @@
     "svelte": "^5.28.2",
     "svelte-check": "^4.1.6",
     "svelte-json-tree": "^2.2.0",
-    "svelte-ux": "2.0.0-next.0",
+    "svelte-ux": "2.0.0-next.8",
     "svelte2tsx": "^0.7.36",
     "tailwindcss": "^4.1.5",
     "tslib": "^2.8.1",