General: Add missing closing li in plugin editor.

Adds a missing closing `li` tag in the plugin editor file list.

Props dkarfa, pmbaldha, sandeepdahiya, cikrimcin, westonruter, audrasjb, joedolson.
Fixes #63546.
Built from https://develop.svn.wordpress.org/trunk@60479


git-svn-id: http://core.svn.wordpress.org/trunk@59815 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/plugin-editor.php

@@ -288,6 +288,7 @@ printf(
 		<ul role="group">
 			<?php wp_print_plugin_file_tree( wp_make_plugin_file_tree( $plugin_editable_files ) ); ?>
 		</ul>
+	</li>
 	</ul>
 </div>
 

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.9-alpha-60478';
+$wp_version = '6.9-alpha-60479';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.