Vertically align review icons on repository sidebar (#11880)

* Vertically align review icons on repository sidebar

* Update web_src/less/_repository.less

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

Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: Lauris BH <lauris@nix.lv>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>

web_src/less/_repository.less

@@ -86,6 +86,10 @@
         }
 
         .ui.list {
+            &.assignees .icon {
+                line-height: 2em;
+            }
+
             .hide {
                 display: none !important;
             }