Fix labels and projects menu overflow on issue page (#31435)

It was correct only on the new issue page.

Resolves #31415

web_src/css/repo.css

@@ -79,6 +79,11 @@
   white-space: nowrap;
 }
 
+.repository .issue-content-right .filter.menu {
+  max-height: 500px;
+  overflow-x: auto;
+}
+
 .repository .filter.menu.labels .label-filter .menu .info {
   display: inline-block;
   padding: 0.5rem 0;
@@ -562,11 +567,6 @@ td .commit-summary {
   font-size: 14px;
 }
 
-.repository.new.issue .comment.form .issue-content-right .filter.menu {
-  max-height: 500px;
-  overflow-x: auto;
-}
-
 .repository.view.issue .instruct-toggle {
   display: inline-block;
 }