Redo fix for related issues border radius

app/assets/stylesheets/framework.scss

@@ -68,3 +68,4 @@
 @import 'framework/flex_grid';
 @import 'framework/system_messages';
 @import "framework/spinner";
+@import 'framework/card';

app/assets/stylesheets/framework/card.scss

+.card-header {
+  &:first-child {
+    // intended use case: card with only a header (for example empty related issues)
+    &.border-0,
+    &.border-bottom-0 {
+      @include border-radius($card-inner-border-radius);
+    }
+  }
+}

changelogs/unreleased/winh-related-issues-border.yml

+---
+title: Redo fix for related issues border radius
+merge_request: 17172
+author:
+type: fixed

ee/app/assets/stylesheets/pages/issues/related_issues.scss

@@ -2,10 +2,6 @@ $token-spacing-bottom: 0.5em;
 
 .related-issues-block {
   margin-top: 3 * $gl-vert-padding;
-
-  .card-slim {
-    overflow: auto;
-  }
 }
 
 .related-issues-header-help-icon {