Enabling 144hz for Asus PG278Q on AMD gpu

[ToastyX]

That does seem like a new limit, but finding it would be hard because the number 10 exists in hundreds of places in the driver. The limit seems to be 9 on my Vega 8 laptop, so the limit is GPU-specific, which means I have no way of figuring out where the limit is for the RX 5700XT. Even if I found it, there has to be a reason they're limiting it, so changing it might not even work.