Align the system gesture swipe threshold when reporting insets

he swipe threshold in SystemGesturesPointerEventListener is changed from
(status bar size + threshold) to max(status bar size, cutout size + threshold).

We should also align this change when reporting gesture insets to app.

Bug: 205230536
Test: atest WindowInsetsBehaviorTests
Change-Id: I3c51f5447e469c832693b27169894d636b1c250b

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

@@ -1077,7 +1077,8 @@ public class DisplayPolicy {
                             if (cutout != null) {
                                 final Rect top = cutout.getBoundingRectTop();
                                 if (!top.isEmpty()) {
-                                    rect.bottom = rect.bottom + mDisplayCutoutTouchableRegionSize;
+                                    rect.bottom = Math.max(rect.bottom,
+                                            top.bottom + mDisplayCutoutTouchableRegionSize);
                                 }
                             }
                         };