refactor(button-close): deprecate white input prop, use ThemeDirective composition for dark prop

Author: xidedix

projects/coreui-angular/src/lib/button/button-close.directive.ts

@@ -1,15 +1,20 @@
 import { booleanAttribute, Directive, HostBinding, Input } from '@angular/core';
+import { ThemeDirective } from '../shared/theme.directive';
 import { ButtonDirective } from './button.directive';
 
 @Directive({
   selector: '[cButtonClose]',
-  standalone: true
+  standalone: true,
+  hostDirectives: [
+    { directive: ThemeDirective, inputs: ['dark'] }
+  ]
 })
 export class ButtonCloseDirective extends ButtonDirective {
 
   /**
    * Change the default color to white.
    * @type boolean
+   * @deprecated 5.0.0. Use `cButtonClose.dark` instead.
    */
   @Input({ transform: booleanAttribute }) white: string | boolean = false;