Address feedback

Author: AKSHAT2802

packages/editor/src/components/post-publish-panel/index.js

@@ -78,7 +78,7 @@ export class PostPublishPanel extends Component {
 				<div className="editor-post-publish-panel__header">
 					{ isPostPublish ? (
 						<Button
-							size="compact"
+							__next40pxDefaultSize
 							onClick={ onClose }
 							icon={ closeSmall }
 							label={ __( 'Close panel' ) }