Fix base template lookup order for sections #2995
Description
What's happening
(also see img below)
This happens on both Hugo 0.18.1 and Hugo 0.19-DEV. Didn't happen on Hugo 0.18-DEV
I have a theme, with default layouts defined as follows: ./themes/freja/layouts/_default/{baseof,list,single}.html
For the gen section of the website I've overriden all of them:
./themes/freja/layouts/gen/{baseof,list,single}.html
And now the section's baseof template isn't used.
Screenshot of the file tree:
./themes/freja/layouts/_default/baseof.html is a regular html file:
<!DOCTYPE html>
<html lang="{{.Site.LanguageCode}}">
...
<body>
<main>
{{ block "main" . }}
{{ end }}
</main>
</body>
</html>
whereas ./themes/freja/layouts/gen/baseof.html is just a shell:
{{ block "main" . }}
{{ end }}
The rest of the templates are quite similar.
The result for /gen should look like this: https://dmitriid.com/gen/social/ Now, however, the output is surrounded by HTML from the theme's default baseof.html