iOS18 beta版本，usesGroupingSeparator设置为yes后，groupingSize值变成了3.与iOS18以下groupingSize值为0不一样。是bug还是后续正式版本也做相关调整？
let formatter = NumberFormatter()
let temp = NSNumber(floatLiteral: value)
formatter.usesGroupingSeparator = true;
print(formatter.string(from: temp) ?? "","分割位数",formatter.groupingSize)
//iOS18以下打印结果：2222222 分割位数 0；iOS18打印结果：2,222,222 分割位数 3
bohuanzhixin
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