test: ✅ fix random @nx/vitest plugin random crash

this happens when resolving multiple configs loading @react-router/dev/vite

Author: yjaaidi

nx.json

@@ -60,14 +60,6 @@
         "watchDepsTargetName": "watch-deps"
       }
     },
-    {
-      "plugin": "@nx/vitest",
-      "options": {
-        "testTargetName": "test",
-        "ciTargetName": "test-ci",
-        "testMode": "watch"
-      }
-    },
     {
       "plugin": "@nx/playwright/plugin",
       "options": {