fix(#31666): Fix scroll brief display while dragging cards

As demonstrated in #31726 (comment), an horizontal scrollbar can appears while dragging a card to a column from the right side, as the ghost card is animated to fit in. Force hidding the scrollbars using overflow:clip.

Author: Simandara

web_src/css/features/projects.css

@@ -50,7 +50,7 @@
   padding: 0 !important;
   flex-wrap: nowrap !important;
   flex-direction: column;
-  overflow-x: auto;
+  overflow-x: clip;
   gap: .25rem;
 }