fix: align react-native and packages/expo deps for manypkg consistency

manypkg enforces version range consistency across the monorepo.
Two issues from the SDK 56 upgrade:

1. examples/expo-example: react-native ~0.85.3 → ^0.83.4
   The most common range across the repo is ^0.83.4 (used by
   packages/expo and packages/react-native). SDK 56 Expo packages
   accept react-native *, so ^0.83.4 still satisfies their peer deps.

2. packages/expo devDependencies: bump Expo SDK 55 → 56
   - expo: ~55.0.9 → ~56.0.5
   - expo-constants: ~55.0.9 → ~56.0.16
   - expo-device: ~55.0.10 → ~56.0.4
   - expo-notifications: ~55.0.16 → ~56.0.14

Verified with: yarn manypkg check → success workspaces valid!

Co-authored-by: Kyle McDonald <kylemcd@users.noreply.github.com>

Author: cursoragent

examples/expo-example/package.json

@@ -30,7 +30,7 @@
     "expo-web-browser": "~56.0.5",
     "react": "^19.2.5",
     "react-dom": "^19.2.5",
-    "react-native": "~0.85.3",
+    "react-native": "^0.83.4",
     "react-native-gesture-handler": "~2.30.0",
     "react-native-reanimated": "~4.3.1",
     "react-native-safe-area-context": "~5.6.2",

packages/expo/package.json

@@ -70,10 +70,10 @@
     "eslint": "^8.56.0",
     "eslint-plugin-react-hooks": "^5.2.0",
     "eslint-plugin-react-refresh": "^0.5.2",
-    "expo": "~55.0.9",
-    "expo-constants": "~55.0.9",
-    "expo-device": "~55.0.10",
-    "expo-notifications": "~55.0.16",
+    "expo": "~56.0.5",
+    "expo-constants": "~56.0.16",
+    "expo-device": "~56.0.4",
+    "expo-notifications": "~56.0.14",
     "jsdom": "^29.1.0",
     "react": "^19.2.5",
     "react-native": "^0.83.4",