test: refresh sample apps, Tailwind entry, and npm audit overrides

- Add tailwind.css entry and adjust PostCSS for Next sample projects
- Bump lockfiles and add overrides (file-type, flatted, undici) for zero audit issues
- Sync pp-dev config and styles with updated toolchain

Author: sergak01

tests/test-commonjs/package-lock.json

@@ -15,10 +15,12 @@
   "devDependencies": {
     "@types/luxon": "^3.7.1",
     "typescript": "^5.9.3",
-    "vite": "^6.4.1"
+    "vite": "^8.0.1"
   },
   "overrides": {
-    "file-type": "^21.3.1",
-    "minimatch": "10.2.4"
+    "file-type": "^21.3.3",
+    "flatted": ">=3.4.2",
+    "minimatch": "10.2.4",
+    "undici": ">=6.24.0"
   }
 }

tests/test-commonjs/package.json

@@ -7,6 +7,7 @@ const ppDevConfig: PPDevConfig = {
   integrateMiTopBar: true,
   v7Features: true,
   templateLess: true,
+  disableSSLValidation: true,
 };
 
 export default ppDevConfig;