Always use whole user name as link (#27815)

Starting from #25790 this shared template only linked the username of
the user if both display name and username were shown. I experienced
myself always trying to click on the display name - I think it is
annoying for others too.

After:


![grafik](https://github.com/go-gitea/gitea/assets/47871822/a0e82127-b773-4ca4-890f-d18422a7bef2)

![grafik](https://github.com/go-gitea/gitea/assets/47871822/79efcf93-2f50-4fc4-ba15-afc6174be48c)

Author: denyskon

templates/shared/user/name.tmpl

@@ -1,5 +1 @@
-{{if .FullName}}
-	{{.FullName}} <span>(<a class="text primary" href="{{.HomeLink}}">{{.Name}}</a>)</span>
-{{else}}
-	<a class="text primary" href="{{.HomeLink}}">{{.Name}}</a>
-{{end}}
+<a class="text muted" href="{{.HomeLink}}">{{.Name}}{{if .FullName}} ({{.FullName}}){{end}}</a>