[CL-901] [CL-903] Unowned - Prefer signal & change detection (#16949)

libs/angular/src/directives/fallback-src.directive.ts

@@ -7,6 +7,8 @@ import { Directive, ElementRef, HostListener, Input } from "@angular/core";
   standalone: false,
 })
 export class FallbackSrcDirective {
+  // FIXME(https://bitwarden.atlassian.net/browse/CL-903): Migrate to Signals
+  // eslint-disable-next-line @angular-eslint/prefer-signals
   @Input("appFallbackSrc") appFallbackSrc: string;
 
   /** Only try setting the fallback once. This prevents an infinite loop if the fallback itself is missing. */