Retain issue sort type when a keyword search is introduced (#34559) (#34581)

Backport #34559 by badhezi

Fixes #34523

Co-authored-by: badhezi <[email protected]>

Author: GiteaBot

templates/repo/issue/search.tmpl

@@ -8,6 +8,7 @@
 			<input type="hidden" name="project" value="{{$.ProjectID}}">
 			<input type="hidden" name="assignee" value="{{$.AssigneeID}}">
 			<input type="hidden" name="poster" value="{{$.PosterUsername}}">
+			<input type="hidden" name="sort" value="{{$.SortType}}">
 		{{end}}
 		{{template "shared/search/input" dict "Value" .Keyword}}
 		{{if .PageIsIssueList}}