Copy drawable so that mutations don't affect other uses of the drawable

Fix: 397770855
Flag: EXEMPT - test fix
Test: OverviewTaskSelectImageTest
Change-Id: I9e0fa179ab3c7de6edf566f50459c51c6efb4377

quickstep/src/com/android/quickstep/views/IconView.kt

@@ -78,7 +78,8 @@ class IconView : View, TaskViewIcon {
     override fun setDrawable(d: Drawable?) {
         drawable?.callback = null
 
-        drawable = d
+        // Copy drawable so that mutations below do not affect other users of the drawable
+        drawable = d?.constantState?.newDrawable()?.mutate()
         drawable?.let {
             it.callback = this
             setDrawableSizeInternal(width, height)