style(switch): Call `validate-theme-keys` in the `theme-styles` mixin to allow for custom css properties.
style(switch): Call `validate-theme-keys` in the `theme-styles` mixin to allow for custom css properties.

PiperOrigin-RevId: 422922107

material-components/material-components-web,material-components/material-components-web,material-components/material-components-web