You're never going to get an answer on this from Marvel. This isn't the first time they reused an actor for a different role. They're so self-contained that you can consider them or not consider them, it doesn't matter.
Great, I know Scarlett Johansson is going to do a hell of a job!
I assume Mahershala Ali has a cameo or something.
Once the deal with Netflix fell to pieces probably yes. But they may or may not regard it as "not canon" so much as they will freely reuse actors from it as different characters.