Don't overflow project/group dropdown results

Closes #49382.

app/assets/stylesheets/framework/dropdowns.scss

@@ -822,7 +822,7 @@ header.header-content .dropdown-menu.frequent-items-dropdown-menu {
   display: flex;
   flex-direction: row;
   width: 500px;
-  height: 334px;
+  height: 354px;
 
   .frequent-items-dropdown-sidebar,
   .frequent-items-dropdown-content {
@@ -868,6 +868,7 @@ header.header-content .dropdown-menu.frequent-items-dropdown-menu {
   }
 
   .frequent-items-list-container {
+    height: 304px;
     padding: 8px 0;
     overflow-y: auto;
 
@@ -897,10 +898,6 @@ header.header-content .dropdown-menu.frequent-items-dropdown-menu {
     margin-top: 8px;
   }
 
-  .frequent-items-search-container {
-    height: 284px;
-  }
-
   @include media-breakpoint-down(xs) {
     .frequent-items-list-container {
       width: auto;

changelogs/unreleased/project-dropdown-list-overflow.yml

+---
+title: Don't overflow project/group dropdown results
+merge_request: 20704
+author: gfyoung
+type: fixed