feat(android): Expose enableAnrFingerprinting option

Allows React Native users to opt out of the default-on ANR fingerprinting
behavior introduced in Android SDK 8.35.0, which groups ANR events with
system-only stacktraces into a single issue.

Fixes #5837

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: antonis

CHANGELOG.md

@@ -14,7 +14,8 @@
 - Add `expoUpdatesListenerIntegration` that records breadcrumbs for Expo Updates lifecycle events ([#5795](https://github.com/getsentry/sentry-react-native/pull/5795))
   - Tracks update checks, downloads, errors, rollbacks, and restarts as `expo.updates` breadcrumbs
   - Enabled by default in Expo apps (requires `expo-updates` to be installed)
-  - 
+- feat(android): Expose `enableAnrFingerprinting` option ([#5837](https://github.com/getsentry/sentry-react-native/issues/5837))
+
 ### Fixes
 
 - Fix native frames measurements being dropped due to race condition ([#5813](https://github.com/getsentry/sentry-react-native/pull/5813))

packages/core/android/src/main/java/io/sentry/react/RNSentryStart.java

@@ -151,6 +151,9 @@ static void getSentryAndroidOptions(
     if (rnOptions.hasKey("enableTombstone")) {
       options.setTombstoneEnabled(rnOptions.getBoolean("enableTombstone"));
     }
+    if (rnOptions.hasKey("enableAnrFingerprinting")) {
+      options.setEnableAnrFingerprinting(rnOptions.getBoolean("enableAnrFingerprinting"));
+    }
     if (rnOptions.hasKey("spotlight")) {
       if (rnOptions.getType("spotlight") == ReadableType.Boolean) {
         options.setEnableSpotlight(rnOptions.getBoolean("spotlight"));

packages/core/src/js/options.ts

@@ -73,6 +73,19 @@ export interface BaseReactNativeOptions {
    */
   enableNdkScopeSync?: boolean;
 
+  /**
+   * When enabled, ANR events whose stacktraces contain only system frames
+   * (e.g. `java.lang`, `android.os`) are assigned a static fingerprint and
+   * grouped into a single issue instead of creating many separate issues.
+   *
+   * Enabled by default in the Android SDK since v8.35.0.
+   * Set to `false` to restore per-stacktrace ANR grouping.
+   *
+   * @default true
+   * @platform android
+   */
+  enableAnrFingerprinting?: boolean;
+
   /**
    * When enabled, all the threads are automatically attached to all logged events on Android
    *