bug(mat-list-item): Color of mat-icon in mat-list does not get applied

### Is this a regression?

- [X] Yes, this behavior used to work in the previous version

### The previous version in which this bug was not present was

15.1.6

### Description

Setting the color input on the mat-icon in a mat-list-item does not get applied. The color of the icon gets overridden by the class .mat-mdc-list-item-icon. Before the default color could be overriden.

### Reproduction

Steps to reproduce:
1. Check List example in 15.1.6: https://stackblitz.com/edit/angular-o9oxb4
2. Example in 15.2.2: https://stackblitz.com/edit/angular-wdvemx

### Expected Behavior

Configured color input of mat-icon should be applied.

### Actual Behavior

Configured color input of mat-icon does not get applied and because it gets overriden.

### Environment

- Angular: 15
- CDK/Material: 15.2.2
- Browser(s): Chrome
- Operating System (e.g. Windows, macOS, Ubuntu): macOS

Inizia con gli esempi List di StackBlitz collegati e confronta il comportamento di mat-list-item tra le versioni 15.1.6 e 15.2.2, concentrandoti sul colore di mat-icon e sulla classe .mat-mdc-list-item-icon. Il lavoro è completato quando un colore di mat-icon configurato viene applicato nella versione corrente come nella 15.1.6.

Scritto dal modello di indicizzazione a partire dal testo della issue.