Incorrect rendering of `:has()` and `:not()` selectors since `4.0.7`

[saadeghi]

What version of Tailwind CSS are you using?

v4.0.7 and v4.0.8
(It was working correctly in 4.0.6)

What build tool (or framework if it abstracts the build tool) are you using?

For example: Vite 6

Reproduction URL

https://github.com/saadeghi/tw-has-bug

Describe your issue
Plugin:

export default ({ addComponents }) => {
  addComponents({
    ".parent-bug": {
      "&:has(.child:nth-child(2))": {
        background: "green",
      },
    },
    ".empty-has-bug": {
      "&:has(:nth-child(2))": {
        background: "yellow",
      },
    },
    ".empty-not-bug": {
      "&:not(:nth-child(1))": {
        background: "blue",
      },
    },
  });
};

expected output:

.parent-bug {
  &:has(.child:nth-child(2)) {
    background: green;
  }
}

.empty-has-bug {
  &:has(:nth-child(2)) {
    background: yellow;
  }
}

.empty-not-bug {
  &:not(:nth-child(1)) {
    background: blue;
  }
}

generated style in v4.0.7 and v4.0.8

.parent-bug {
  &:has():nth-child(2) {
    background: green;
  }
}

.empty-has-bug {
  &:has():nth-child(2) {
    background: yellow;
  }
}

.empty-not-bug {
  &:not():nth-child(1) {
    background: blue;
  }
}

The first 2 selectors were working correctly in 4.0.6.

[philipp-spiess]

@saadeghi Excellent repro, thank you so much! Fix incoming.