Bump devDependency versions in UI template

Update template/ui/package.json.template devDependencies: bump vite to ^8.0.0 (inside the vite conditional), unplugin-icons to ^23.0.1, and vitest to ^4.1.0. These changes align the UI template with newer major releases of the tooling.

Author: ruibaby

template/ui/package.json.template

@@ -32,7 +32,7 @@
   },
   "devDependencies": {
 {{#if (eq uiTool "vite")}}
-    "vite": "^7.3.1",
+    "vite": "^8.0.0",
 {{else}}
     "@rsbuild/core": "^1.7.3",
     "@rsbuild/plugin-sass": "^1.5.0",
@@ -57,8 +57,8 @@
     "prettier": "^3.6.0",
     "sass": "^1.89.2",
     "typescript": "~5.8.3",
-    "unplugin-icons": "^22.1.0",
-    "vitest": "^3.2.4",
+    "unplugin-icons": "^23.0.1",
+    "vitest": "^4.1.0",
     "vue-tsc": "^3.2.4"
   },
   "packageManager": "pnpm@10.12.4"