added preventDefault

Author: waleedlatif1

apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/workflow-block/components/sub-block/components/tool-input/tool-input.tsx

@@ -672,6 +672,7 @@ export function ToolInput({
 
   const handleDragStart = (e: React.DragEvent, index: number) => {
     if (isPreview || disabled) return
+    e.preventDefault()
     setDraggedIndex(index)
     e.dataTransfer.effectAllowed = 'move'
     e.dataTransfer.setData('text/html', '')