Fix Arabic floating point number display problem

Most languages use dot . as floating point, however,
Arabic uses ٫ as  floating point.

Bug: 210453969
Test: manual visual
      Settings -> Storage
Change-Id: I55702d0fc243e59eecaa2283c45ee70260ef8cf2

packages/SettingsLib/UsageProgressBarPreference/src/com/android/settingslib/widget/UsageProgressBarPreference.java

@@ -40,7 +40,7 @@ import java.util.regex.Pattern;
  */
 public class UsageProgressBarPreference extends Preference {
 
-    private final Pattern mNumberPattern = Pattern.compile("[\\d]*[\\.,]?[\\d]+");
+    private final Pattern mNumberPattern = Pattern.compile("[\\d]*[\\٫.,]?[\\d]+");
 
     private CharSequence mUsageSummary;
     private CharSequence mTotalSummary;