Qt: Circle in compatibility list

[ghost]

The circle indicating the compatibility of a game is quite jagged. This is particularly annoying on an HiDPI screen:

I've had a look at the code and attempted a few fixes for this, including...

...QPainter's normal Antialiasing...

...and QPainter's "HighQualityAntialiasing":

I've attempted a few other methods as well, but to my eye they all look either jagged or blurry or not like circles at all. There might well be a way to actually make the circles round, but I haven't found one.

A possible remedy for this might be changing the circle into...

...a square...

...or a rectangle:

Personally, I prefer the last alternative as I think the geometry fits the rest of RPCS3:

If someone more experienced than me could figure out a way to make the circle round that might be the best solution, however.

At any rate, I suggest a vote: https://www.strawpoll.me/17884582

[ghost]

For future reference, here is a potential fix: #5899 (comment)

It would also be nice to customize these through style sheets.