Fix test; image src is now only set after lightbox opens

Author: artemiomorales

test/e2e/specs/editor/blocks/image.spec.js

@@ -828,11 +828,11 @@ test.describe( 'Image - interactivity', () => {
 		const lightbox = page.locator( '.wp-lightbox-overlay' );
 		await expect( lightbox ).toBeHidden();
 
+		await page.getByRole( 'button', { name: 'Enlarge image' } ).click();
+
 		const image = lightbox.locator( 'img' );
 		await expect( image ).toHaveAttribute( 'src', new RegExp( filename ) );
 
-		await page.getByRole( 'button', { name: 'Enlarge image' } ).click();
-
 		await expect( lightbox ).toBeVisible();
 
 		const closeButton = lightbox.getByRole( 'button', {