feat: support Vite v6 in mocker/ui packages

This avoids warnings like:

```
└─┬ vitest 3.0.0-beta.2
  └─┬ @vitest/mocker 3.0.0-beta.2
    └── ✕ unmet peer vite@^5.0.0: found 6.0.3
```

Author: cexbrayat

packages/mocker/package.json

@@ -55,7 +55,7 @@
   },
   "peerDependencies": {
     "msw": "^2.4.9",
-    "vite": "^5.0.0"
+    "vite": "^5.0.0 || ^6.0.0"
   },
   "peerDependenciesMeta": {
     "msw": {

packages/ui/package.json

@@ -81,7 +81,7 @@
     "unocss": "^0.65.1",
     "unplugin-auto-import": "^0.18.6",
     "unplugin-vue-components": "^0.27.5",
-    "vite": "^5.0.0",
+    "vite": "^5.0.0 || ^6.0.0",
     "vite-plugin-pages": "^0.32.4",
     "vue": "^3.5.12",
     "vue-router": "^4.5.0",