Disambiguate DreamManager#startDream.

Test: atest DreamManagerServiceTests
Bug: 245223722
Bug: 245058392
Bug: 245070240
Change-Id: I3cc954d5d3f6ce581904d37b28bf1c00901aa046
diff --git a/tests/framework/base/windowmanager/util/src/android/server/wm/DreamCoordinator.java b/tests/framework/base/windowmanager/util/src/android/server/wm/DreamCoordinator.java
index c824c70..ced0497 100644
--- a/tests/framework/base/windowmanager/util/src/android/server/wm/DreamCoordinator.java
+++ b/tests/framework/base/windowmanager/util/src/android/server/wm/DreamCoordinator.java
@@ -76,7 +76,7 @@
     }
 
     public void startDream() {
-        SystemUtil.runWithShellPermissionIdentity(mDreamManager::startDream);
+        SystemUtil.runWithShellPermissionIdentity(() -> mDreamManager.startDream());
     }
 
     public void stopDream() {