Add logs to debug flakiness of the test

Bug: 270677470
Test: n/a, adding logs to debug raven specific flakiness in the lab

Change-Id: I5a12a08d7b804e04144f6473f8e3348ea9e9d339

tests/FlickerTests/src/com/android/server/wm/flicker/helpers/PipAppHelper.kt

@@ -386,8 +386,11 @@ open class PipAppHelper(instrumentation: Instrumentation) :
                     it.wmState.visibleWindows.firstOrNull { window ->
                         this.windowMatchesAnyOf(window)
                     }
-                        ?: return@add false
+                Log.d(TAG, "window " + pipAppWindow)
+                if (pipAppWindow == null) return@add false
                 val pipRegion = pipAppWindow.frameRegion
+                Log.d(TAG, "region " + pipRegion +
+                        " covers " + windowRect.coversMoreThan(pipRegion))
                 return@add windowRect.coversMoreThan(pipRegion)
             }
             .waitForAndVerify()