Adjusts event clone styling for drag operation

Ensures dragged event clones maintain correct positioning
by setting `marginLeft` to `0px`. This fixes a potential
visual issue where the clone might not fill the full
column width during dragging.

src/renderers/EventRenderer.ts

@@ -222,6 +222,7 @@ export abstract class BaseEventRenderer implements EventRendererStrategy {
     // Dragged event skal have fuld kolonne bredde
     clone.style.left = '2px';
     clone.style.right = '2px';
+    clone.style.marginLeft = '0px';
     clone.style.width = '';
     clone.style.height = originalEvent.style.height || `${originalEvent.getBoundingClientRect().height}px`;