Just to be clear the OP was misleading with thread title.
They have
NOT made it legal tender. He is going to submit it to Congress
next week to
try and make it legal tender. In politics nothing is done until it's done.

Somewhat this is correct mate that he will be sending to the congress first but as a Leader of the country majority of His passing to the congress directly will become a Legal and valid.
there are only few chances that the president , Prime minister or even the Kings has been denied by the congress to pass the upcoming law so basically this can be considered as legit and happening any time soon.