fix show add button when multi select active

src/lib/listing/workflow/workflow.component.html

@@ -32,6 +32,7 @@
             *ngIf="column.entities | async as entities"
             [cdkDropListData]="entities"
             [cdkDropListEnterPredicate]="canMoveTo(column)"
+            [class.multi-select-active]="selectionColumn === column"
             [id]="column.key"
             [itemSize]="itemHeight"
             cdkDropList

src/lib/listing/workflow/workflow.component.scss

@@ -67,6 +67,10 @@
     overflow-y: auto;
     @include no-scroll-bar;
     min-height: calc(100% - 36px);
+
+    &.multi-select-active {
+        min-height: calc(100% - 86px);
+    }
 }
 
 .item {