SF: Fix duplicate callbacks from mirrored layers

When cloning layers, we would also clone the layer's
callback handles which resulted in SF emitting duplicate
callbacks.

Test: presubmit
Test: launcher does not ANR when switching wallpapers with screen recording enabled
Bug: 205922358

Change-Id: Ic0435164f27d9bca7f80fc57d9021a9f544c936f
diff --git a/services/surfaceflinger/BufferLayer.cpp b/services/surfaceflinger/BufferLayer.cpp
index 71db330..8c97f12 100644
--- a/services/surfaceflinger/BufferLayer.cpp
+++ b/services/surfaceflinger/BufferLayer.cpp
@@ -831,7 +831,7 @@
     wp<Layer> tmpTouchableRegionCrop = mDrawingState.touchableRegionCrop;
     WindowInfo tmpInputInfo = mDrawingState.inputInfo;
 
-    mDrawingState = clonedFrom->mDrawingState;
+    cloneDrawingState(clonedFrom.get());
 
     mDrawingState.touchableRegionCrop = tmpTouchableRegionCrop;
     mDrawingState.zOrderRelativeOf = tmpZOrderRelativeOf;