fix(table): meta-cell drag-leave flicker guard + plumb unique on create

Author: TheodoreSpeaks

apps/sim/app/workspace/[workspaceId]/tables/[tableId]/components/column-config-sidebar/column-config-sidebar.tsx

@@ -106,7 +106,11 @@ function ColumnConfigBody({
 
     try {
       if (config.mode === 'create') {
-        await addColumn.mutateAsync({ name: trimmedName, type: typeInput })
+        await addColumn.mutateAsync({
+          name: trimmedName,
+          type: typeInput,
+          ...(uniqueInput ? { unique: true } : {}),
+        })
         toast.success(`Added "${trimmedName}"`)
         onClose()
         return

apps/sim/app/workspace/[workspaceId]/tables/[tableId]/components/table-grid/headers/workflow-group-meta-cell.tsx

@@ -327,6 +327,7 @@ export function WorkflowGroupMetaCell({
       const th = e.currentTarget as HTMLElement
       const related = e.relatedTarget as Node | null
       if (related && th.contains(related)) return
+      if (related && related instanceof Element && related.closest('th')) return
       onDragLeave?.()
     },
     [onDragLeave]