Cleanup some plurals in Settings

Change <one> to <1> in string res file, and update related java files.
Test: Update, existing test still pass.
bug: 199230342

Change-Id: Idd0ba3c6adc060da21574d98f8ed765fae00cef8

src/com/android/settings/privacy/AccessibilityUsagePreferenceController.java

@@ -25,6 +25,7 @@ import androidx.preference.Preference;
 
 import com.android.settings.R;
 import com.android.settings.core.BasePreferenceController;
+import com.android.settingslib.utils.StringUtil;
 
 import java.util.List;
 
@@ -60,7 +61,7 @@ public class AccessibilityUsagePreferenceController extends BasePreferenceContro
 
     @Override
     public CharSequence getSummary() {
-        return mContext.getResources().getQuantityString(R.plurals.accessibility_usage_summary,
-                mEnabledServiceInfos.size(), mEnabledServiceInfos.size());
+        return StringUtil.getIcuPluralsString(mContext, mEnabledServiceInfos.size(),
+                R.string.accessibility_usage_summary);
     }
 }