[BUGFIX] Maximum height not restricted

Fixes: #61157

Configuration/TinyMce/standard.js

@@ -4,6 +4,7 @@ tinymce.init({
 	paste_as_text: true,
 	remove_script_host: false,
 	relative_urls: false,
+	autoresize_max_height: 500,
 	plugins: [
 		'advlist autolink lists charmap hr anchor pagebreak searchreplace wordcount visualblocks visualchars code',
 		'nonbreaking save table directionality template paste colorpicker autoresize'