Fix synchronization issue in tests.

Test: Manual
Bug: 306178462
Change-Id: I4937f8043088080db01a74208096623da5cbed8f
diff --git a/services/tests/displayservicetests/src/com/android/server/display/DisplayManagerServiceTest.java b/services/tests/displayservicetests/src/com/android/server/display/DisplayManagerServiceTest.java
index c7b1abf..3035258 100644
--- a/services/tests/displayservicetests/src/com/android/server/display/DisplayManagerServiceTest.java
+++ b/services/tests/displayservicetests/src/com/android/server/display/DisplayManagerServiceTest.java
@@ -2440,7 +2440,7 @@
         callback.waitForExpectedEvent();
         callback.clear();
 
-        callback.expectsEvent(EVENT_DISPLAY_CONNECTED);
+        callback.expectsEvent(EVENT_DISPLAY_ADDED);
         FakeDisplayDevice displayDevice =
                 createFakeDisplayDevice(displayManager, new float[]{60f}, Display.TYPE_EXTERNAL);
         callback.waitForExpectedEvent();