Emoji: Fix a unit test which was incorrectly failing after [31926] fixed emoji being incorrectly encoded.

git-svn-id: https://develop.svn.wordpress.org/trunk@31940 602fd350-edb4-49c9-b593-d223f7449a82

tests/phpunit/tests/post.php

@@ -1057,7 +1057,7 @@ class Tests_Post extends WP_UnitTestCase {
 		$expected = array(
 			'post_title'   => "foo😈bar",
 			'post_content' => "foo😎baz",
-			'post_excerpt' => "fooὡbat"
+			'post_excerpt' => "foo😐bat"
 		);
 
 		edit_post( $data );