Fix iOS prebuild with Expo SDK 54+ (RCT-Folly / RCT_USE_RN_DEP)

[samuelbeaulieu]

When running expo prebuild on Expo SDK 54+, pod install fails because theta-client-react-native declares a direct dependency on RCT-Folly, which is no longer resolved that way in the new setup.

Error

❯ expo prebuild --clean

✔ Cleared android, ios code
✔ Created native directories
✔ Updated package.json | no changes
About Libraries activity - ADDED
Gradle Plugin Portal repository - ADDED
About Libraries Gradle Plugin repository - ADDED
About Libraries Gradle Plugin - APPLIED
About Libraries Gradle Plugin - CONFIGURED
LicensePlist buildPhase in nativeTarget "PixelGuru" - ADDED
Settings.bundle/Root.plist - ADDED
✔ Finished prebuild
⚠️  Something went wrong running `pod install` in the `ios` directory.
Command `pod install` failed.
└─ Cause: Unable to find a specification for `RCT-Folly` depended upon by `theta-client-react-native`

You have either:
 * mistyped the name or version.
 * not added the source repo that hosts the Podspec to your Podfile.


pod install --repo-update --ansi exited with non-zero code: 1
✨  Done in 25.63s.

Cause

In Expo SDK 54+, React Native sets RCT_USE_RN_DEP=1 and supplies Folly (and related New Architecture deps) itself. This podspec always adds RCT-Folly and sets -DRCT_NEW_ARCH_ENABLED=1 when RCT_NEW_ARCH_ENABLED=1, which conflicts with that and leads to the “Unable to find a specification for RCT-Folly” error.

Fix

Only add the RCT-Folly dependency and the New Architecture compiler flags when RCT_USE_RN_DEP != '1'. When RCT_USE_RN_DEP=1 (Expo SDK 54+), rely on React Native’s Folly and flags. For the case where we do depend on Folly, pin RCT-Folly to folly_version to avoid version mismatches.

Testing

Verified expo prebuild --clean and pod install succeed in an Expo SDK 54 project using the patch.