Fix refactoring typo

Seems like when we renamed/rearranged the methods we didn't ignore
mPolicyVisibility..and that's the most important part!

Fixes a bug where the dock divider isn't animating when unlocking
the phone.

Bug: 36200726
Change-Id: I4c5e9ca7f1b6e7bf21f793e1cf39d92fe77489e8

services/core/java/com/android/server/wm/WindowState.java

@@ -1306,7 +1306,7 @@ class WindowState extends WindowContainer<WindowState> implements WindowManagerP
      *         otherwise.
      */
     boolean wouldBeVisibleIfPolicyIgnored() {
-        return mHasSurface && mPolicyVisibility && !isParentWindowHidden()
+        return mHasSurface && !isParentWindowHidden()
                 && !mAnimatingExit && !mDestroying && (!mIsWallpaper || mWallpaperVisible);
     }