Fix two intro strings for Magnification page during Suw

- Keep the SuW intro and hide the setting intro

Bug: 220025399
Test: Manual testing
Change-Id: Ie4e9eace8dbd638bd141c14a22603644d93d458a

src/com/android/settings/accessibility/ToggleScreenReaderPreferenceFragmentForSetupWizard.java

@@ -46,6 +46,9 @@ public class ToggleScreenReaderPreferenceFragmentForSetupWizard
                 description, icon);
 
         mToggleSwitchWasInitiallyChecked = mToggleServiceSwitchPreference.isChecked();
+        if (mTopIntroPreference != null) {
+            mTopIntroPreference.setVisible(false);
+        }
     }
 
     @Override