[ui] Link to pr list page on sidebar when view pr (#12256)

Fix #12254

Signed-off-by: a1012112796 <1012112796@qq.com>

Co-authored-by: techknowlogick <techknowlogick@gitea.io>

templates/repo/issue/view_content/sidebar.tmpl

@@ -126,12 +126,12 @@
 			<span class="no-select item {{if .HasSelectedLabel}}hide{{end}}">{{.i18n.Tr "repo.issues.new.no_label"}}</span>
 			{{range .Labels}}
 				<div class="item">
-					<a class="ui label {{if not .IsChecked}}hide{{end}}" id="label_{{.ID}}" href="{{$.RepoLink}}/issues?labels={{.ID}}" style="color: {{.ForegroundColor}}; background-color: {{.Color}}" title="{{.Description | RenderEmojiPlain}}">{{.Name | RenderEmoji}}</a>
+					<a class="ui label {{if not .IsChecked}}hide{{end}}" id="label_{{.ID}}" href="{{$.RepoLink}}/{{if $.Issue.IsPull}}pulls{{else}}issues{{end}}?labels={{.ID}}" style="color: {{.ForegroundColor}}; background-color: {{.Color}}" title="{{.Description | RenderEmojiPlain}}">{{.Name | RenderEmoji}}</a>
 				</div>
 			{{end}}
 			{{range .OrgLabels}}
 				<div class="item">
-					<a class="ui label {{if not .IsChecked}}hide{{end}}" id="label_{{.ID}}" href="{{$.RepoLink}}/issues?labels={{.ID}}" style="color: {{.ForegroundColor}}; background-color: {{.Color}}" title="{{.Description | RenderEmojiPlain}}">{{.Name | RenderEmoji}}</a>
+					<a class="ui label {{if not .IsChecked}}hide{{end}}" id="label_{{.ID}}" href="{{$.RepoLink}}/{{if $.Issue.IsPull}}pulls{{else}}issues{{end}}?labels={{.ID}}" style="color: {{.ForegroundColor}}; background-color: {{.Color}}" title="{{.Description | RenderEmojiPlain}}">{{.Name | RenderEmoji}}</a>
 				</div>
 
 			{{end}}
@@ -236,7 +236,7 @@
 			<div class="selected">
 				{{range .Issue.Assignees}}
 					<div class="item" style="margin-bottom: 10px;">
-						<a href="{{$.RepoLink}}/issues?assignee={{.ID}}"><img class="ui avatar image" src="{{.RelAvatarLink}}">&nbsp;{{.GetDisplayName}}</a>
+						<a href="{{$.RepoLink}}/{{if $.Issue.IsPull}}pulls{{else}}issues{{end}}?assignee={{.ID}}"><img class="ui avatar image" src="{{.RelAvatarLink}}">&nbsp;{{.GetDisplayName}}</a>
 					</div>
 				{{end}}
 			</div>