Fixed text overflow in dropdown menu (#26694)

Fixes #26622


![image](https://github.com/go-gitea/gitea/assets/683358/168b7e4d-97ba-4b5f-a5f5-33ee67e8b4be)

Co-authored-by: Giteabot <teabot@gitea.io>

web_src/css/repo.css

@@ -162,6 +162,11 @@
   left: 0;
 }
 
+.repository .filter.menu .ui.dropdown .menu .item {
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
 .repository .select-label .desc {
   padding-left: 23px;
 }