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/select/option.component.ts

@@ -7,7 +7,6 @@ import { Option } from "./option";
 @Component({
   selector: "bit-option",
   template: `<ng-template><ng-content></ng-content></ng-template>`,
-  standalone: true,
 })
 export class OptionComponent<T = unknown> implements Option<T> {
   @Input()

libs/components/src/select/select.component.spec.ts

@@ -10,7 +10,6 @@ import { SelectComponent } from "./select.component";
 import { SelectModule } from "./select.module";
 
 @Component({
-  standalone: true,
   imports: [SelectModule, ReactiveFormsModule],
   template: `
     <form [formGroup]="form">

libs/components/src/select/select.component.ts

@@ -35,7 +35,6 @@ let nextId = 0;
   selector: "bit-select",
   templateUrl: "select.component.html",
   providers: [{ provide: BitFormFieldControl, useExisting: SelectComponent }],
-  standalone: true,
   imports: [NgSelectModule, ReactiveFormsModule, FormsModule],
 })
 export class SelectComponent<T> implements BitFormFieldControl, ControlValueAccessor {