Cleanup plurals in Settings, change <one> to <1> in string res file.

"One" and "1" are not same, such as "1st place" vs "a
place". Also in many languages, plurals expression is different with English, for more detail please check: go/android-i18n-plurals.
So in string res file, replace "one" with excat value "1" is a more
proper way.

Test: Existing unit tests still pass.
Bug: 199230342
Change-Id: I832abc38afc5d8816fa803865c25e6017cffa2c6

src/com/android/settings/datausage/DataSaverSummary.java

@@ -17,6 +17,7 @@ package com.android.settings.datausage;
 import android.app.Application;
 import android.app.settings.SettingsEnums;
 import android.content.Context;
+import android.icu.text.MessageFormat;
 import android.os.Bundle;
 import android.telephony.SubscriptionManager;
 import android.widget.Switch;
@@ -38,6 +39,9 @@ import com.android.settingslib.search.SearchIndexable;
 import com.android.settingslib.widget.OnMainSwitchChangeListener;
 
 import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Locale;
+import java.util.Map;
 
 @SearchIndexable
 public class DataSaverSummary extends SettingsPreferenceFragment
@@ -207,8 +211,12 @@ public class DataSaverSummary extends SettingsPreferenceFragment
                 count++;
             }
         }
-        mUnrestrictedAccess.setSummary(getResources().getQuantityString(
-                R.plurals.data_saver_unrestricted_summary, count, count));
+        MessageFormat msgFormat = new MessageFormat(
+                getResources().getString(R.string.data_saver_unrestricted_summary),
+                Locale.getDefault());
+        Map<String, Object> arguments = new HashMap<>();
+        arguments.put("count", count);
+        mUnrestrictedAccess.setSummary(msgFormat.format(arguments));
     }
 
     public static boolean isDataSaverVisible(Context context) {