More db.DefaultContext refactor (#27265) (#27347)

Backport #27265 by @JakobDev

Part of #27065

This PR touches functions used in templates. As templates are not static
typed, errors are harder to find, but I hope I catch it all. I think
some tests from other persons do not hurt.

Co-authored-by: JakobDev <jakobdev@gmx.de>

templates/shared/issuelist.tmpl

@@ -93,7 +93,7 @@
 						</a>
 					{{end}}
 					{{if .Project}}
-						<a class="project flex-text-inline" href="{{.Project.Link}}">
+						<a class="project flex-text-inline" href="{{.Project.Link ctx}}">
 							{{svg .Project.IconName 14}}{{.Project.Title}}
 						</a>
 					{{end}}