Bug description: With a minimal component: ``` selected?: string; states = ['Alabama ?']; ``` and ``` <input [(ngModel)]="selected" [typeahead]="states" > ``` when you write manually `Alabama ?`, after writing the character `?` a strong tag appears  Versions of ngx-bootstrap, Angular, and Bootstrap: ngx-bootstrap: 19.0.2 Angular: 19.2.14 Bootstrap: 4.6.1 **Expected behavior** A clear and concise description of what you expected to happen.