Refer to [1] webmachinelearning/webnn#724 - **change argmin/argmax to take scalar axis** and [2] webmachinelearning/webnn#722 - **Remove argmin/max selectLastIndex parameter**.
Refer to [1] webmachinelearning/webnn#724 - change argmin/argmax to take scalar axis and [2] webmachinelearning/webnn#722 - Remove argmin/max selectLastIndex parameter.