Remove standalone true from platform and UIF (#15032)

Remove standalone: true from every instance since it's the default as of Angular 19.

libs/components/src/toast/toast-container.component.ts

@@ -4,7 +4,6 @@ import { ToastContainerDirective, ToastrService } from "ngx-toastr";
 @Component({
   selector: "bit-toast-container",
   templateUrl: "toast-container.component.html",
-  standalone: true,
   imports: [ToastContainerDirective],
 })
 export class ToastContainerComponent implements OnInit {

libs/components/src/toast/toast.component.ts

@@ -28,7 +28,6 @@ const variants: Record<ToastVariant, { icon: string; bgColor: string }> = {
 @Component({
   selector: "bit-toast",
   templateUrl: "toast.component.html",
-  standalone: true,
   imports: [SharedModule, IconButtonModule, TypographyModule],
 })
 export class ToastComponent {

libs/components/src/toast/toastr.component.ts

@@ -26,7 +26,6 @@ import { ToastComponent } from "./toast.component";
       transition("active => removed", animate("{{ easeTime }}ms {{ easing }}")),
     ]),
   ],
-  standalone: true,
   imports: [ToastComponent],
 })
 export class BitwardenToastrComponent extends BaseToastrComponent {