Fix border-radius on view, blame and code search (#30545) (#30560)

Backport #30545 by @silverwind

Fixes: https://github.com/go-gitea/gitea/issues/30540

1. Fix all these boxes by adding `bottom attached` and removing a
problematic CSS rule:

<img width="1319" alt="Screenshot 2024-04-17 at 22 25 31"
src="https://github.com/go-gitea/gitea/assets/115237/346445a4-4944-4003-a1ef-6f5b0eda624e">
<img width="643" alt="Screenshot 2024-04-17 at 22 21 18"
src="https://github.com/go-gitea/gitea/assets/115237/10f17ed3-9ad6-48de-92fa-bac6621815b9">

2. Change the "last commit" box to `ui segment` which has correct
border-radius. Also included is a tiny tweak to make author name ellipse
instead of wrap.

<img width="1331" alt="Screenshot 2024-04-17 at 22 23 23"
src="https://github.com/go-gitea/gitea/assets/115237/285fbd45-ced0-4d33-abe3-7384ffa03188">

Co-authored-by: silverwind <me@silverwind.io>

templates/repo/blame.tmpl

@@ -28,7 +28,7 @@
 			</div>
 		</div>
 	</h4>
-	<div class="ui attached table unstackable segment">
+	<div class="ui bottom attached table unstackable segment">
 		<div class="file-view code-view unicode-escaped">
 			{{if .IsFileTooLarge}}
 				{{template "shared/filetoolarge" dict "RawFileLink" .RawFileLink}}

templates/repo/settings/lfs_file.tmpl

@@ -11,7 +11,7 @@
 					<a class="ui primary tiny button" href="{{.LFSFilesLink}}/find?oid={{.LFSFile.Oid}}&size={{.LFSFile.Size}}">{{ctx.Locale.Tr "repo.settings.lfs_findcommits"}}</a>
 				</div>
 			</h4>
-			<div class="ui attached table unstackable segment">
+			<div class="ui bottom attached table unstackable segment">
 				{{template "repo/unicode_escape_prompt" dict "EscapeStatus" .EscapeStatus "root" $}}
 				<div class="file-view{{if .IsMarkup}} markup {{.MarkupType}}{{else if .IsPlainText}} plain-text{{else if .IsTextFile}} code-view{{end}}">
 					{{if .IsFileTooLarge}}

templates/repo/view_file.tmpl

@@ -11,7 +11,7 @@
 	{{end}}
 
 	{{if not .ReadmeInList}}
-		<div id="repo-file-commit-box" class="ui top attached header list-header tw-mb-4 tw-flex tw-justify-between">
+		<div id="repo-file-commit-box" class="ui segment list-header tw-mb-4 tw-flex tw-justify-between">
 			<div class="latest-commit">
 				{{template "repo/latest_commit" .}}
 			</div>
@@ -84,7 +84,7 @@
 			{{end}}
 		</div>
 	</h4>
-	<div class="ui attached table unstackable segment">
+	<div class="ui bottom attached table unstackable segment">
 		{{if not (or .IsMarkup .IsRenderedHTML)}}
 			{{template "repo/unicode_escape_prompt" dict "EscapeStatus" .EscapeStatus "root" $}}
 		{{end}}

web_src/css/repo.css

@@ -435,7 +435,6 @@ td .commit-summary {
   padding: 0 !important;
 }
 
-.non-diff-file-content .attached.segment,
 .non-diff-file-content .pdfobject {
   border-radius: 0 0 var(--border-radius) var(--border-radius);
 }
@@ -2391,6 +2390,7 @@ tbody.commit-list {
 .author-wrapper {
   max-width: 180px;
   align-self: center;
+  white-space: nowrap;
 }
 
 /* in the commit list, messages can wrap so we can use inline */