add warning alert in flutter index

Author: denrase

docs/platforms/flutter/index.mdx

@@ -88,6 +88,11 @@ try {
 }
 ```
 
+<Alert level="warning" title="Android 16 KB Page Size">
+  Use Sentry Flutter SDK version `8.11.0` and above to support 16 KB page sizes on Andorid devices, or your app will crash.
+  Refer to [Troubleshooting](/platforms/flutter/troubleshooting/#support-16-kb-page-sizes-on-android) for more information.
+</Alert>
+
 ## Next Steps
 
 - <PlatformLink to="/features">Learn about the features of Sentry's Flutter SDK</PlatformLink>