Fix crash if device policy disables MTE

Flag: EXEMPT bugfix
Test: set device policy using TestDPC, observe crash is gone
Bug: 407990172
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:ec6b4842bef8f6f29989bb370d44499a70d6172e)
Merged-In: Ib5f01cb5bb3296ee0b5909a1a730e9dad040902b
Change-Id: Ib5f01cb5bb3296ee0b5909a1a730e9dad040902b
diff --git a/res/xml/more_security_privacy_settings.xml b/res/xml/more_security_privacy_settings.xml
index 56706c3..a3725c5 100644
--- a/res/xml/more_security_privacy_settings.xml
+++ b/res/xml/more_security_privacy_settings.xml
@@ -224,7 +224,7 @@
         settings:keywords="@string/keywords_app_pinning"
         settings:controller="com.android.settings.security.ScreenPinningPreferenceController" />
 
-    <Preference
+    <com.android.settingslib.RestrictedPreference
         android:order="300"
         android:id="@+id/memtag_page"
         android:key="memtag_page"