Fixed bug stopping issue boards cards being dragged

This was caused by the window being zoomed & therefore returning a
non-rounded number. The number now gets rounded to correctly work in the
if statement

Closes #29576

app/assets/javascripts/boards/components/board_list.js

@@ -48,7 +48,7 @@ import boardCard from './board_card';
             this.list.getIssues(false);
           }
 
-          if (this.scrollHeight() > this.listHeight()) {
+          if (this.scrollHeight() > Math.ceil(this.listHeight())) {
             this.showCount = true;
           } else {
             this.showCount = false;

changelogs/unreleased/issue-boards-cant-drag-fix.yml

@@ -0,0 +1,4 @@
+---
+title: Fixed bug in issue boards which stopped cards being able to be dragged
+merge_request:
+author: