Change One-handed mode controls states in the Settings pages for

improving better UX experience

According to UX feedback to adjust One-handed mode UI
controls’ status in the Settings page for better UX experience.

Bug: 192171369

Test: manual verified on Settings > System > Gesture page
> System controls page
Test: make RunSettingsRoboTests ROBOTEST_FILTER=
      "com.android.settings.gestures
      .OneHandedEnablePreferenceControllerTest"
Test: make RunSettingsRoboTests ROBOTEST_FILTER=
      "com.android.settings.gestures
      .OneHandedMainSwitchPreferenceControllerTest"
Test: make RunSettingsRoboTests ROBOTEST_FILTER=
      "com.android.settings.gestures
      .OneHandedActionPullDownPrefControllerTest"
Test: make RunSettingsRoboTests ROBOTEST_FILTER=
      "com.android.settings.gestures
      .OneHandedActionShowNotificationPrefControllerTest"
Test: make RunSettingsRoboTests ROBOTEST_FILTER=
"com.android.settings.gestures
.OneHandedPreferenceCategoryControllerTest"

Change-Id: I76242fe70c3ec06cd5e2f9bb059c87293cc686dd