fix(mobile): align Jest preset with React Native

Author: Medformatik

.github/dependabot.yml

@@ -62,6 +62,8 @@ updates:
       # ahead of the runtime — bump it deliberately when the Node version moves.
       - dependency-name: "@types/node"
         update-types: ["version-update:semver-major"]
+      - dependency-name: "@react-native/jest-preset"
+        # Kept aligned with react-native; Expo upgrades both as one reviewed stack.
 
   # The documentation site is a standalone pnpm workspace and is therefore
   # not covered by the root npm configuration above.

apps/mobile/package.json

@@ -43,7 +43,7 @@
   },
   "devDependencies": {
     "@expo/plist": "^0.8.1",
-    "@react-native/jest-preset": "^0.87.0",
+    "@react-native/jest-preset": "0.86.2",
     "@testing-library/react-native": "^14.0.1",
     "@types/jest": "^30.0.0",
     "@types/node": "^26.2.0",