gesture insets fix

lib/widgets/common/basic/insets.dart

@@ -7,23 +7,16 @@ import 'package:provider/provider.dart';
 // - a vertically scrollable body.
 // It will prevent the body from scrolling when a user swipe from bottom to use Android Q style navigation gestures.
 class BottomGestureAreaProtector extends StatelessWidget {
-  // as of Flutter v1.22.5, `systemGestureInsets` from `MediaQuery` mistakenly reports no bottom inset,
-  // so we use an empirical measurement instead
-  static const double systemGestureInsetsBottom = 32;
-
   @override
   Widget build(BuildContext context) {
     return Selector<MediaQueryData, double>(
-      selector: (c, mq) => mq.effectiveBottomPadding,
-      builder: (c, mqPaddingBottom, child) {
-        // devices with physical navigation buttons have no bottom insets
-        // we assume these devices do not use gesture navigation
-        if (mqPaddingBottom == 0) return SizedBox();
+      selector: (c, mq) => mq.systemGestureInsets.bottom,
+      builder: (c, systemGestureBottom, child) {
         return Positioned(
           left: 0,
           right: 0,
           bottom: 0,
-          height: systemGestureInsetsBottom,
+          height: systemGestureBottom,
           child: AbsorbPointer(),
         );
       },