This PR fixes two issues:
- When a variant is defined by `matchVariant` it could match unknown
values but not apply the variant (because it's unknown). This would
result in a utility being output that is the _same_ as a bare utility
without variants but a longer name. These were intended to be discarded
but weren't done so correctly.
- Similarly, when we encounter a known value but its not a string the
same thing would happen where we'd output a utility without applying the
variant. This was also intended to be discarded.
Basically given this code:
```js
matchVariant(
"foo",
(value) => `&:is([data-foo='${value}'])`,
{
values: {
DEFAULT: "",
bar: "bar",
obj: { some: "object" },
},
}
)
```
And this HTML:
```html
<div class="foo-bar:bg-none foo-[baz]:bg-none foo-baz:bg-none foo-obj:bg-none"></div>
```
This CSS would be produced:
```css
@layer utilities {
.foo-bar\:bg-none {
&:is([data-foo='bar']) {
background-image: none;
}
}
/* this one shouldn't be here */
.foo-baz\:bg-none {
background-image: none;
}
/* this one shouldn't be here */
.foo-obj\:bg-none {
background-image: none;
}
.foo-\[baz\]\:bg-none {
&:is([data-foo='baz']) {
background-image: none;
}
}
}
```
ee987e3f6a