Adjust default key counter for legacy skins to match stable

[Flamiii]

When you import a legacy skin into osu!(lazer), the interface will look something like this, with the key counter being in the bottom right:

I propose that it should look something like this instead, by utilizing the new argon key counter and putting it in the center right of the screen in a way that is very similar to stable:

Given that it seems like the default interface for legacy skins is supposed to match stable as much as possible, I think that this placement for the key counter makes more sense as it is very similar to the key counter in stable.

[hrfarmer]

Didn't even notice someone already made this discussion, but I made a branch to do exactly this. If someone on the osu! team is okay with this I can make a pr.

hrfarmer@377db18

Screen.Recording.2024-02-26.at.1.45.29.PM.mov

[bdach]

If anything the legacy assets should be getting used and not the argon key counter. As in the legacy counter should be actually implemented.

[Joehuu]

Legacy key counter added in #29027.