[BUG] `qml.probs`' first argument is `wires` unlike other MPs

[dime10]

It's very easy to accidentally pass an mcm result into probs as a wire instead of an observable. Other MPs that both take wires and observables have the observable as the first argument (op=None, wires=None), probs on the other hand uses (wires=None, op=None).

[eskayML]

looks like the inconsistent arg order for probs is causing some confusion. we can fix this by swapping the order of the args to match the other MPs, so (op=None, wires=None) instead of (wires=None, op=None). should i open a PR for this?

[dime10]

I'm happy with that solution, might just want to check with product because it would involve a breaking change.

[eskayML]

Alright
Fingers crossed