refactor(input-group): cleanup

Author: xidedix

projects/coreui-angular/src/lib/form/input-group/input-group.component.ts

@@ -9,7 +9,7 @@ export class InputGroupComponent {
   /**
    * Size the component small or large.
    */
-  readonly sizing = input<string | 'sm' | 'lg' | ''>('');
+  readonly sizing = input<string | 'sm' | 'lg' | ''>();
 
   readonly hostClasses = computed(() => {
     const sizing = this.sizing();