Fix toggle widget can be switched under overlapped view

- ag/11612781 added filterTouchesWhenObscured to toggle widget
  can't prevent the click behavior pass through the overlapped view.
- Due to click events was handled by SwitchPreference instead of the
  toggle widget.
- Enable the filterTouchesWhenObscured attribute on all
  SwitchPreferences in all pages of the special app access.


Bug: 155288585
Test: manual test
Here is the test steps
  1.Create an overlapped view's app and launch it to overlap the
    other apps.
  2.Launch Settings
  3.Goto Apps & notification > Advanced > Special app access
  4.Click any toggle under Special app access to monitor it can be
    switched or not. It must be not switched.
Change-Id: I9c9cf4719153292ed03f55a6eb9d3a308677aee3

src/com/android/settings/widget/AppSwitchPreference.java

@@ -36,7 +36,8 @@ public class AppSwitchPreference extends SwitchPreference {
         super.onBindViewHolder(holder);
         final View switchView = holder.findViewById(android.R.id.switch_widget);
         if (switchView != null) {
-            switchView.setFilterTouchesWhenObscured(true);
+            final View rootView = switchView.getRootView();
+            rootView.setFilterTouchesWhenObscured(true);
         }
     }
 }

src/com/android/settings/widget/FilterTouchesRestrictedSwitchPreference.java

@@ -52,7 +52,8 @@ public class FilterTouchesRestrictedSwitchPreference extends RestrictedSwitchPre
         super.onBindViewHolder(holder);
         final View switchView = holder.findViewById(android.R.id.switch_widget);
         if (switchView != null) {
-            switchView.setFilterTouchesWhenObscured(true);
+            final View rootView = switchView.getRootView();
+            rootView.setFilterTouchesWhenObscured(true);
         }
     }
 }

src/com/android/settings/widget/FilterTouchesSwitchPreference.java

@@ -50,7 +50,8 @@ public class FilterTouchesSwitchPreference extends SwitchPreference {
         super.onBindViewHolder(holder);
         final View switchView = holder.findViewById(android.R.id.switch_widget);
         if (switchView != null) {
-            switchView.setFilterTouchesWhenObscured(true);
+            final View rootView = switchView.getRootView();
+            rootView.setFilterTouchesWhenObscured(true);
         }
     }
 }