chore(android): Mention ANR mechanism (#7053)

Author: romtsn

src/platforms/android/configuration/app-not-respond.mdx

@@ -31,6 +31,8 @@ Both ANR detection implementations are controlled by the same flag:
 
 Whenever the main UI thread of the application is blocked for more than five seconds, the SDK will report the problem to the server.
 
+The integration reports ANR events with `mechanism:ANR`.
+
 <Note>
 
 Sentry does not report the ANR if the application is in debug mode.
@@ -50,4 +52,6 @@ You can also specify how long the thread should be blocked before the ANR is rep
 This approach reads the [ApplicationExitInfo](https://developer.android.com/reference/android/app/ApplicationExitInfo) API on the next app launch
 and asynchronously sends ANR events to Sentry for each ANR in the history, enriching only the latest one with breadcrumbs, contexts, tags, etc.
 
+The integration reports ANR events with `mechanism:AppExitInfo`.
+
 ![ANR](app-not-respond.png)