HybridApp dev menu "Change bundle location" doesn't affect or persist the Metro server/bundle location

[MelvinBot]

Problem

The React Native dev menu's Change bundle location / Configure bundler option does not reliably control where the JS bundle is loaded from in the HybridApp, and the configured Metro server/bundle location is not persisted as expected.

iOS

The iOS HybridApp app delegate hardcodes its debug bundle URL to localhost:8081 on the simulator and <ip.txt host>:8081 on a physical device. This bypasses RCTBundleURLProvider, which owns the host and port saved by React Native's Configure bundler dev-menu action. As a result, changing the bundler host/port in the dev menu has no effect — the app keeps loading from the hardcoded location.

Android

On Android, the previously configured Metro server / bundle location is not persisted across app restarts, so developers have to reconfigure it every time.

Expected behavior

• Debug builds should resolve the JS bundle through RCTBundleURLProvider, honoring a configured Metro host and port while retaining React Native's existing ip.txt/localhost discovery and bundled main.jsbundle fallback.
• Release builds should continue loading the bundled main.jsbundle.
• The configured Metro server/bundle location should persist across app restarts on Android.

Notes

• The iOS fix lives in the Mobile-Expensify repo (Mobile-Expensify#14058).
• The Android persistence fix has landed upstream in React Native (Persist Change Bundle Location host setting react/react-native#57425) and is expected to ship with RN 0.88.

Fix

Addressed by #98794.

[mountiny]

#98797