Build/Test Tools: Fix the hello e2e test assertion.

The previous assertion was always valid because we assumed it returned a single object,
while in reality it was returning an array.

Props hideokamoto.
Fixes #47622.


git-svn-id: https://develop.svn.wordpress.org/trunk@45575 602fd350-edb4-49c9-b593-d223f7449a82

tests/e2e/specs/hello.test.js

@@ -3,9 +3,9 @@ import { visitAdminPage } from '@wordpress/e2e-test-utils';
 describe( 'Hello World', () => {
 	it( 'Should load properly', async () => {
 		await visitAdminPage( '/' );
-		const title = await page.$x(
+		const nodes = await page.$x(
 			'//h2[contains(text(), "Welcome to WordPress!")]'
 		);
-		expect( title ).not.toBeNull();
+		expect( nodes.length ).not.toEqual( 0 );
 	} );
 } );