bug(mat-navigation-list): Navigation List active items should have on-secondary-container color

### Description

Currently, Navigation List active item has a secondary-container background, but does not use on-secondary-container color, which we find erroneous

### Reproduction

https://material.angular.dev/components/list/examples#list-navigation

### Expected Behavior

Navigation List active items should have color of on-secondary-container, since they have a background color of secondary-container

### Actual Behavior

Navigation List items do not update their color when set to active and remain on-surface even though their background is no longer surface

### Environment

- Angular: v21
- CDK/Material: v21
- Browser(s): any
- Operating System (e.g. Windows, macOS, Ubuntu): any

Ouvrez l’exemple Navigation List à l’adresse material.angular.dev/components/list/examples#list-navigation et examinez le style appliqué à l’élément actif. Le travail est terminé lorsqu’un élément actif conserve son arrière-plan secondary-container et utilise la couleur on-secondary-container au lieu de on-surface ; vérifiez le comportement de l’exemple après la modification.

Rédigé par le modèle d'indexation à partir du texte de l'issue.