Include title yaml metadata

[secure-77]

In the protected function yamlFrontmatter($yaml) , I need to check if 'title' is available and then show it:

            $yamlText = '
            <div class="mod-header">
            <div class="metadata-properties-heading">
            <div class="collapse-indicator collapse-icon">
                <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="svg-icon right-triangle"><path d="M3 8L12 17L21 8">
                </path></svg>
            </div>
            <div class="metadata-properties-title">'.$parsed['title'] .'</div>
            </div>
            <div class="metadata-container" tabindex="-1" data-property-count="1">
                <div class="metadata-content">
                <div class="metadata-properties">
            ';