Revert "Change quickstep onboarding tip window type to"

This reverts commit 4df16fb106.

Reason for revert: This change does not really fix the z-layering while this issue is mitigated by the the update of the tip UI. It also causes b/109836271

Fixes: b/73990691
Fixes: b/109836271
Test: Manual test
Change-Id: I6443e7d54e535e353a9ffc71c48ef8b6c3f47972

packages/SystemUI/src/com/android/systemui/recents/RecentsOnboarding.java

@@ -479,7 +479,7 @@ public class RecentsOnboarding {
                 ViewGroup.LayoutParams.WRAP_CONTENT,
                 ViewGroup.LayoutParams.WRAP_CONTENT,
                 x, -mNavBarHeight / 2,
-                WindowManager.LayoutParams.TYPE_NAVIGATION_BAR_PANEL,
+                WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY,
                 flags,
                 PixelFormat.TRANSLUCENT);
         lp.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_SHOW_FOR_ALL_USERS;