Upgrade React Native to 0.86.0

[roncodes]

Summary

• Bump the app version to 0.0.20 and upgrade React Native to 0.86.0 with matching React Native tooling.
• Update native companion packages for the new React Native runtime, including Reanimated, Worklets, and SVG.
• Refresh iOS pods and add a Stripe iOS compatibility patch needed for the upgraded build.
• Adjust Android autolinking to call the React Native CLI through Node directly.

Validation

• iOS: xcodebuild Debug iphonesimulator build succeeded.
• Android: ./gradlew assembleDebug succeeded.