feat(android): allow custom OkHttpClient via factory

[whydidoo]

Replace direct OkHttpClient instantiation with a configurablefactory in companion object, enabling custom client configuration(SSL, interceptors, timeouts) from the host application.

Summary

Currently, RemoteScriptLoader creates a hardcoded OkHttpClient() instance with no way to customize it. This is a problem for apps that need custom HTTP configuration — for example, certificate pinning, custom SSL trust managers, logging interceptors, or proxy settings.

This PR introduces a static okHttpClientFactory lambda in a companion object, allowing host applications to provide their own OkHttpClient instance before any network requests are made:

RemoteScriptLoader.okHttpClientFactory = {
    OkHttpClient.Builder()
        .addInterceptor(loggingInterceptor)
        .sslSocketFactory(sslSocketFactory, trustManager)
        .connectTimeout(30, TimeUnit.SECONDS)
        .build()
}

The client is lazily initialized via by lazy, so the factory is only called once on the first use.

Test plan

1. Default behavior — verify that without setting okHttpClientFactory, a default OkHttpClient() is used (no regression).
2. Custom client — set okHttpClientFactory in Application.onCreate() or a React Native module initializer with a custom interceptor, confirm the interceptor is invoked during remote script loading.
3. Lazy initialization — confirm the factory is called only once, regardless of how many scripts are loaded.

[vercel]

@whydidoo is attempting to deploy a commit to the Callstack Team on Vercel.

A member of the Team first needs to authorize it.

[changeset-bot]

🦋 Changeset detected

Latest commit: 23fc64d

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 6 packages

Name	Type
@callstack/repack	Major
@callstack/repack-plugin-expo-modules	Major
@callstack/repack-plugin-nativewind	Major
@callstack/repack-plugin-reanimated	Major
@callstack/repack-dev-server	Major
@callstack/repack-init	Major

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[bartekkrok]

Thanks for the contribution! A couple of thoughts:

• Could you add some documentation for this feature?
• Looking at the iOS side, ScriptManager.mm has the same limitation. Would you be open to adding an equivalent mechanism for iOS?

[whydidoo]

Thanks for the contribution! A couple of thoughts:

• Could you add some documentation for this feature?
• Looking at the iOS side, ScriptManager.mm has the same limitation. Would you be open to adding an equivalent mechanism for iOS?

@bartekkrok Thanks for the replay.

I will add documentation for this feature.

As for iOS, can I do it in this PR?

[bartekkrok]

Thanks for the contribution! A couple of thoughts:

• Could you add some documentation for this feature?
• Looking at the iOS side, ScriptManager.mm has the same limitation. Would you be open to adding an equivalent mechanism for iOS?

@bartekkrok Thanks for the replay.

I will add documentation for this feature.

As for iOS, can I do it in this PR?

You can create separate for ios or separate including both platforms together.