当按下国旗时，国家选择功能不应该出现，并且不应该能够选择不同的国家。

Stack(
            children: [
              InternationalPhoneNumberInput(
                onInputChanged: (value) {},
                cursorColor: ColorConstants.blackColor,
                formatInput: false,
                initialValue: number,
                textFieldController: controller,
                selectorConfig:
                    const SelectorConfig(selectorType: PhoneInputSelectorType.BOTTOM_SHEET,),
                inputDecoration: InputDecoration(
                    contentPadding: EdgeInsets.only(
                      bottom: 15.h,
                    ),
                    border: InputBorder.none,
                    hintText: TextConstants.phoneNumber,
                    hintStyle: TextStyle(color: ColorConstants.customGreyColor, fontSize: 16.sp)),
              ),
              Positioned(
                  left: 92.w,
                  top: 5.h,
                  child: Container(
                    height: 40.h,
                    width: 1.w,
                    color: Colors.grey.shade400,
                  ))
            ],
          )),