Fix PHPUnit test

Author: Takshil-Kunadia

packages/block-library/src/image/index.php

@@ -216,7 +216,7 @@ function block_core_image_render_lightbox( $block_content, $block ) {
 	$p->set_attribute( 'data-wp-on-async-window--resize', 'callbacks.setButtonStyles' );
 	// Set an event to prefetch the image on pointerenter and pointerdown(mobile).
 	$p->set_attribute( 'data-wp-on--pointerenter', 'actions.prefetchImage' );
-	$p->set_attribute( 'data-wp-on--pointerdown', 'actions.prefetchImage' ); 
+	$p->set_attribute( 'data-wp-on--pointerdown', 'actions.prefetchImage' );
 	// Sets an event callback on the `img` because the `figure` element can also
 	// contain a caption, and we don't want to trigger the lightbox when the
 	// caption is clicked.