Convert union type to string to fix codegen error

[naftalibeder]

📢 Type of change

• Bugfix
• New feature
• Enhancement
• Refactoring

📜 Description

Running assemble on Android errors with the message:

Unsupported type for param "type". Found: StringLiteralUnionTypeAnnotation

💡 Motivation and Context

Union types are no longer supported in React Native Codegen. I'm not able to find documentation confirming this, but it appears to be an issue others have encountered.

Related:
react/react-native#49566
#4870
react-native-webview/react-native-webview#3767

[alwx]

Hey @naftalibeder and thanks for the PR!

Before we take this, I'd like to pin down the root cause, because I can't reproduce the error from the spec file alone.
I ran @react-native/codegen's TypeScript parser over the unmodified NativeRNSentry.ts, and was unable to reproduce the issue.

Could you share the following with me?

1. your react-native version
2. the output of yarn why @react-native/codegen (or the npm equivalent),
3. whether the error survives a clean build — ./gradlew clean plus deleting the generated codegen output and schema.json under android/build / node_modules/@sentry/react-native/android/build

Thanks a lot!