aaudio: disconnect when onTearDown() called

It will be called, for example, when switching from speaker to Bluetooth.

Bug: 62883778
Test: run a long app and switch to or from Bluetooth
Change-Id: Iafb9b52d85c30fee71de46abfb99a27a1daabf59
diff --git a/services/oboeservice/AAudioServiceStreamBase.h b/services/oboeservice/AAudioServiceStreamBase.h
index 2898211..653b456 100644
--- a/services/oboeservice/AAudioServiceStreamBase.h
+++ b/services/oboeservice/AAudioServiceStreamBase.h
@@ -117,7 +117,7 @@
 
     void run() override; // to implement Runnable
 
-    void processFatalError();
+    void disconnect();
 
     uid_t getOwnerUserId() const {
         return mOwnerUserId;