Convert a11y shortcut edit screen to a full screen.

Bug: 300302098

Flag: adb shell device_config put accessibility com.android.settings.accessibility.edit_shortcuts_in_full_screen true

Test: manual
Test: atest com.android.settings.accessibility.shortcuts

Change-Id: I0b5e367fed962ff01036122ce7ff32a8ae47fbc3

aconfig/accessibility/accessibility_flags.aconfig

@@ -2,9 +2,17 @@ package: "com.android.settings.accessibility"
 
 # NOTE: Keep alphabetized to help limit merge conflicts from multiple simultaneous editors.
 
+flag {
+  name: "edit_shortcuts_in_full_screen"
+  namespace: "accessibility"
+  description: "Show the edit shorcuts screen in full screen, since the shortcut options are increasing."
+  bug: "300302098"
+}
+
+
 flag {
   name: "remove_qs_tooltip_in_suw"
   namespace: "accessibility"
   description: "Don't show quick settings tooltip in SUW, since the user can't use quick settings there."
   bug: "294560581"
-}
+}