Avoid doubled border for the PR info segment (#30663)

Author: wxiaoguang

templates/repo/issue/view_content/pull.tmpl

@@ -20,6 +20,7 @@
 	{{- else if .Issue.PullRequest.CanAutoMerge}}green
 	{{- else}}red{{end}}">{{svg "octicon-git-merge" 40}}</div>
 	<div class="content">
+		{{if .LatestCommitStatus}}
 		<div class="ui attached segment fitted">
 		{{template "repo/pulls/status" (dict
 			"CommitStatus" .LatestCommitStatus
@@ -29,8 +30,9 @@
 			"is_context_required" .is_context_required
 		)}}
 		</div>
+		{{end}}
 		{{$showGeneralMergeForm := false}}
-		<div class="ui attached merge-section segment {{if not $.LatestCommitStatus}}no-header{{end}} flex-items-block">
+		<div class="ui attached segment merge-section {{if not $.LatestCommitStatus}}no-header{{end}} flex-items-block">
 			{{if .Issue.PullRequest.HasMerged}}
 				{{if .IsPullBranchDeletable}}
 					<div class="item item-section text tw-flex-1">