refactor: revert checkbox change

Author: anandtiwary

projects/components/src/checkbox/checkbox.component.ts

@@ -33,7 +33,7 @@ export class CheckboxComponent implements ControlValueAccessor {
 
   @Input()
   public set checked(checked: boolean | undefined) {
-    this.isChecked = checked;
+    this.isChecked = checked ?? false;
   }
 
   public get checked(): boolean | undefined {
@@ -55,7 +55,7 @@ export class CheckboxComponent implements ControlValueAccessor {
   @Output()
   public readonly checkedChange: EventEmitter<boolean> = new EventEmitter();
 
-  public isChecked?: boolean = false;
+  public isChecked: boolean = false;
   public isDisabled: boolean = false;
 
   private onTouched?: () => void;