fix wrong theme class when logged out if default theme is changed (go-gitea#22408)

crystalcommunication · web-flow · commit 9ffaf19d89b2 · 2023-01-12T08:52:05.000-06:00
If you don't use the `auto` theme as the default, the `&lt;html&gt;` tag has
`theme-auto` as it's class when users are logged out. This PR changes it
to use the correct theme class for the default theme when logged out.
diff --git a/templates/base/head.tmpl b/templates/base/head.tmpl
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="{{.locale.Lang}}" class="theme-{{if .SignedUser.Theme}}{{.SignedUser.Theme}}{{else}}auto{{end}}">
+<html lang="{{.locale.Lang}}" class="theme-{{if .SignedUser.Theme}}{{.SignedUser.Theme}}{{else}}{{DefaultTheme}}{{end}}">
 <head>
 	<meta charset="utf-8">
 	<meta name="viewport" content="width=device-width, initial-scale=1">
