buttons are blurry with scaled text

### What Happened?

I only notice this on buttons and keycaps for shortcuts

It might be difficult to demonstrate with how github renders images, but I'm not sure

1.0x scale:

1.20x scale:

### Steps to Reproduce

Increase the system font scale in either the quick-settings menu or in desktop settings, the border around buttons look fuzzy, more than 1 pixel wide

### Expected Behavior

expected to look clean with scaled text

1.20x scale with an edit to gtk.css

`
button,
.keycap {
padding: 4px 7px 4px 7px;
}
`
padding probably isnt being defined in px, but this could break on high dpi screens which I don't have and cant test on

### OS Version

8.x (Circe)

### OS Architecture

amd64 (on most hardwares)

### Session Type

Secure Session (Wayland)

### Software Version

Latest release (I have run all updates)

### Log Output

```shell

```

### Hardware Info

1920x1080 display