fix: Resolve mobile app crash with import.meta and babel config

- Add guard for import.meta in endpoints.ts for React Native compatibility
- Add jsEngine: jsc to app.json to match gradle.properties
- Add @babel/plugin-transform-class-static-block for @pezkuwi/types-codec

mobile/app.json

@@ -6,7 +6,8 @@
     "orientation": "portrait",
     "icon": "./assets/icon.png",
     "userInterfaceStyle": "light",
-    "newArchEnabled": true,
+    "newArchEnabled": false,
+    "jsEngine": "jsc",
     "splash": {
       "image": "./assets/splash-icon.png",
       "resizeMode": "contain",