Do not emit ambiguous character warning on rendered pages

The real sensitivity of ambiguous characters is in source code - therefore warning about
them in rendered pages causes too many warnings. Therefore simply remove the warning
on rendered pages.

The escape button will remain available and it is present on the view source page.

Fix go-gitea#20999

Signed-off-by: Andrew Thornton <art27@cantab.net>

templates/repo/view_file.tmpl

@@ -58,7 +58,9 @@
 		</div>
 	</h4>
 	<div class="ui attached table unstackable segment">
-		{{template "repo/unicode_escape_prompt" dict "EscapeStatus" .EscapeStatus "root" $}}
+		{{if not (or .IsMarkup .IsRenderedHTML)}}
+			{{template "repo/unicode_escape_prompt" dict "EscapeStatus" .EscapeStatus "root" $}}
+		{{end}}
 		<div class="file-view{{if .IsMarkup}} markup {{.MarkupType}}{{else if .IsRenderedHTML}} plain-text{{else if .IsTextSource}} code-view{{end}}">
 			{{if .IsMarkup}}
 				{{if .FileContent}}{{.FileContent | Safe}}{{end}}