Respect size number format in MetricColumn (#1569), fixes #1565

Author: jodydonetti

src/BenchmarkDotNet/Columns/MetricColumn.cs

@@ -33,7 +33,7 @@ public string GetValue(Summary summary, BenchmarkCase benchmarkCase, SummaryStyl
 
             var cultureInfo = summary.GetCultureInfo();
             if (style.PrintUnitsInContent && descriptor.UnitType == UnitType.Size)
-                return SizeValue.FromBytes((long)metric.Value).ToString(style.SizeUnit, cultureInfo);
+                return SizeValue.FromBytes((long)metric.Value).ToString(style.SizeUnit, cultureInfo, descriptor.NumberFormat);
             if (style.PrintUnitsInContent && descriptor.UnitType == UnitType.Time)
                 return TimeInterval.FromNanoseconds(metric.Value).ToString(style.TimeUnit, cultureInfo);
 
@@ -42,4 +42,4 @@ public string GetValue(Summary summary, BenchmarkCase benchmarkCase, SummaryStyl
 
         public override string ToString() => descriptor.DisplayName;
     }
-}
+}