fix(mobile): fix EAS build Node.js version incompatibility for iOS and Android

Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>

mobile/.nvmrc

@@ -0,0 +1 @@
+20.19.4

mobile/package.json

@@ -47,11 +47,13 @@
   "devDependencies": {
     "@babel/core": "^7.24.0",
     "@types/react": "~18.2.79",
-    "@types/react-native": "^0.73.0",
     "eslint": "^8.57.0",
     "eslint-config-expo": "~7.0.0",
     "typescript": "^5.3.0"
   },
+  "engines": {
+    "node": ">=20.19.4"
+  },
   "private": true,
   "expo": {
     "doctor": {