Fix NPE in AutoSyncWorkDataPreferenceController

AutoSyncWorkDataPreferenceController gets mUserHandle from
Utils.getManagedProfileWithDisabled which may return null,
crash will happend when updateState called.
So a judgement here seems helpful to make the program more robust.

Bug: https://partnerissuetracker.corp.google.com/u/1/issues/72908879
Test: make ROBOTEST_FILTER="(AutoSyncWorkDataPreferenceControllerTest)"
RunSettingsRoboTests

Change-Id: I53ca027a2f2dd79655cc2eee67db236cfa03f656
Signed-off-by: tiansiming [田思明] <tiansiming@xiaomi.com>

src/com/android/settings/accounts/AutoSyncWorkDataPreferenceController.java

@@ -17,6 +17,7 @@ package com.android.settings.accounts;
 
 import android.app.Fragment;
 import android.content.Context;
+import android.os.UserHandle;
 
 import com.android.settings.Utils;
 
@@ -34,4 +35,10 @@ public class AutoSyncWorkDataPreferenceController extends AutoSyncPersonalDataPr
     public String getPreferenceKey() {
         return KEY_AUTO_SYNC_WORK_ACCOUNT;
     }
+
+    @Override
+    public boolean isAvailable() {
+        return mUserHandle != null && !mUserManager.isManagedProfile() && !mUserManager.isLinkedUser()
+                && mUserManager.getProfiles(UserHandle.myUserId()).size() > 1;
+    }
 }