fix(vitest-environment): migrate from unenv -> node-mock-http (#1179)

Author: danielroe

package.json

@@ -76,6 +76,7 @@
     "local-pkg": "^1.1.1",
     "magic-string": "^0.30.17",
     "node-fetch-native": "^1.6.5",
+    "node-mock-http": "^1.0.0",
     "ofetch": "^1.4.1",
     "pathe": "^2.0.3",
     "perfect-debounce": "^1.0.0",
@@ -84,7 +85,6 @@
     "std-env": "^3.8.1",
     "tinyexec": "^0.3.2",
     "ufo": "^1.5.4",
-    "unenv": "^1.10.0",
     "unplugin": "^2.2.0",
     "vite": "^6.2.1",
     "vitest-environment-nuxt": "^1.0.1",