feat: allow enableToc to override default no TOC on a per-page basis

layouts/partials/toc.html

@@ -1,5 +1,5 @@
 {{ $hasHeaders := gt (len (findRE "<h\\d.*?>(.|\n)*?</h\\d>" .Content)) 0 }}
-{{ if (and $.Site.Data.config.enableToc (ne .Params.enableToc false) $hasHeaders) }}
+{{ if (or (and (not $.Site.Data.config.enableToc) .Params.enableToc) (and $.Site.Data.config.enableToc (ne .Params.enableToc false) $hasHeaders)) }}
 <aside class="mainTOC">
     <details {{ if $.Site.Data.config.openToc }}open {{ end }}>
         <summary>{{ i18n "toc" }}</summary>