系统设置为阿拉伯语时数字会被转换成阿拉伯语

formatter.string(from: num) 系统阿拉伯语数字会被转成阿拉伯语（"١٦٢١٢٤٨٩٣٢٠٧٣"）
目前我暂时修改了一下凑合着用吧
static func _transform(from object: Any) -> String? {
switch object {
case let str as String:
return str
case let num as NSNumber:
// Boolean Type Inside
if NSStringFromClass(type(of: num)) == "__NSCFBoolean" {
if num.boolValue {
return "true"
} else {
return "false"
}
}
/// 系统设置为阿拉伯语时 formatter.string(from: num)会转换成阿拉伯语（ "١٦٢١٢٤٨٩٣٢٠٧٣"）
return String.init(format: "%@", num) //formatter.string(from: num)
case _ as NSNull:
return nil
default:
return "\(object)"
}
}

The issue points to static _transform(from:) and its NSNumber branch, where formatter.string(from:) produces Arabic-Indic digits under Arabic system settings. Reproduce the behavior with an Arabic locale and numeric input, then locate the relevant serialization tests and verify the output and existing boolean/null handling. No test file is named, so the test entry point must be found first.

Written by the indexing model from the issue text.