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/copy-click/copy-click.directive.spec.ts

@@ -21,7 +21,6 @@ import { CopyClickDirective } from "./copy-click.directive";
       #toastWithLabel
     ></button>
   `,
-  standalone: true,
   imports: [CopyClickDirective],
 })
 class TestCopyClickComponent {

libs/components/src/copy-click/copy-click.directive.ts

@@ -9,7 +9,6 @@ import { ToastService, ToastVariant } from "../";
 
 @Directive({
   selector: "[appCopyClick]",
-  standalone: true,
 })
 export class CopyClickDirective {
   private _showToast = false;