fix: remove duplicate IDs (go-gitea#35210) (go-gitea#35325)

backport go-gitea#35210

Author: lunny

templates/repo/view_file.tmpl

@@ -119,7 +119,7 @@
 						{{range $idx, $code := .FileContent}}
 						{{$line := Eval $idx "+" 1}}
 						<tr>
-							<td id="L{{$line}}" class="lines-num"><span id="L{{$line}}" data-line-number="{{$line}}"></span></td>
+							<td class="lines-num"><span id="L{{$line}}" data-line-number="{{$line}}"></span></td>
 							{{if $.EscapeStatus.Escaped}}
 								<td class="lines-escape">{{if (index $.LineEscapeStatus $idx).Escaped}}<button class="toggle-escape-button btn interact-bg" title="{{if (index $.LineEscapeStatus $idx).HasInvisible}}{{ctx.Locale.Tr "repo.invisible_runes_line"}} {{end}}{{if (index $.LineEscapeStatus $idx).HasAmbiguous}}{{ctx.Locale.Tr "repo.ambiguous_runes_line"}}{{end}}"></button>{{end}}</td>
 							{{end}}