Only primary user is allowed to control secure nfc

Bug: 238298970
Test: manual
Change-Id: I945490ef1e62af479a732c9a260ed94bdd8bc313

src/com/android/settings/nfc/SecureNfcEnabler.java

@@ -61,7 +61,7 @@ public class SecureNfcEnabler extends BaseNfcEnabler {
     }
 
     private boolean isToggleable() {
-        if (mUserManager.isGuestUser()) {
+        if (!mUserManager.isPrimaryUser()) {
             return false;
         }
         return true;

src/com/android/settings/nfc/SecureNfcPreferenceController.java

@@ -109,7 +109,7 @@ public class SecureNfcPreferenceController extends TogglePreferenceController
     }
 
     private boolean isToggleable() {
-        if (mUserManager.isGuestUser()) {
+        if (!mUserManager.isPrimaryUser()) {
             return false;
         }
         return true;