Fix inconsistent closed issue list icon (go-gitea#33722)

Fixe go-gitea#33718 

Before 

![image](https://github.com/user-attachments/assets/2c77e249-a118-4471-8c63-ead4fe0f6336)

After 

![image](https://github.com/user-attachments/assets/c082eba8-5b21-4814-b091-c725ca46ccf3)

Author: lunny

templates/repo/issue/openclose.tmpl

@@ -17,7 +17,7 @@
 		{{ctx.Locale.PrettyNumber .OpenCount}} {{ctx.Locale.Tr "repo.issues.open_title"}}
 	</a>
 	<a class="{{if eq .State "closed"}}active {{end}}item flex-text-inline" href="{{if eq .State "closed"}}{{$allStatesLink}}{{else}}{{$closedLink}}{{end}}">
-		{{svg "octicon-check"}}
+		{{svg "octicon-issue-closed"}}
 		{{ctx.Locale.PrettyNumber .ClosedCount}} {{ctx.Locale.Tr "repo.issues.closed_title"}}
 	</a>
 </div>