[Bug][a11y]: Picker button is not using high contrast colors when focused or disabled

### Code of conduct

- [X] I agree to follow this project's code of conduct.

### Impacted component(s)

Picker Button

### Expected behavior

[Picker button](https://opensource.adobe.com/spectrum-web-components/components/picker-button/) must use high contrast system colors when using forced-colors:active

### Actual behavior

Looks like it is still picking colors from non high contrast mode

Start with the Picker Button component documentation linked in the issue and inspect its implementation and styles for focused and disabled states under forced-colors: active. Compare those states with the expected high-contrast system colors, then verify that the Picker button uses them when focused or disabled.

Written by the indexing model from the issue text.