feat(android): Mark enableAnrFingerprinting as experimental

Also enable the option in the sample app.

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

Author: markushi

sentry-android-core/src/main/java/io/sentry/android/core/SentryAndroidOptions.java

@@ -724,8 +724,11 @@ public boolean isAnrProfilingEnabled() {
    * a static fingerprint to ANRs whose stacktraces contain only system frames and no application
    * frames.
    *
+   * <p>This is an experimental feature and may be changed or removed in a future release.
+   *
    * @return true if ANR fingerprinting is enabled
    */
+  @ApiStatus.Experimental
   public boolean isEnableAnrFingerprinting() {
     return enableAnrFingerprinting;
   }
@@ -735,8 +738,11 @@ public boolean isEnableAnrFingerprinting() {
    * to ANR events that would otherwise produce noisy grouping. Currently, this applies a static
    * fingerprint to ANRs whose stacktraces contain only system frames and no application frames.
    *
+   * <p>This is an experimental feature and may be changed or removed in a future release.
+   *
    * @param enableAnrFingerprinting true to enable ANR fingerprinting
    */
+  @ApiStatus.Experimental
   public void setEnableAnrFingerprinting(final boolean enableAnrFingerprinting) {
     this.enableAnrFingerprinting = enableAnrFingerprinting;
   }

sentry-samples/sentry-samples-android/src/main/AndroidManifest.xml

@@ -268,5 +268,8 @@
     <meta-data
       android:name="io.sentry.anr.profiling.sample-rate"
       android:value="1.0" />
+    <meta-data
+      android:name="io.sentry.anr.enable-fingerprinting"
+      android:value="true" />
   </application>
 </manifest>