fix(Cascader):fix trigger slot without keyboard event

components/vc-select/BaseSelect.tsx

@@ -438,6 +438,7 @@ export default defineComponent({
 
     // KeyDown
     const onInternalKeyDown: KeyboardEventHandler = (event, ...rest) => {
+      event.preventDefault();
       const clearLock = getClearLock();
       const { which } = event;
 
@@ -809,6 +810,13 @@ export default defineComponent({
 
       // >>> Selector
       const selectorNode = (
+        <div
+          {...domProps}
+          class={mergedClassName}
+          onMousedown={onInternalMouseDown}
+          onKeydown={onInternalKeyDown}
+          onKeyup={onInternalKeyUp}
+        >
           <SelectTrigger
             ref={triggerRef}
             disabled={disabled}
@@ -871,6 +879,7 @@ export default defineComponent({
               },
             }}
           ></SelectTrigger>
+        </div>
       );
       // >>> Render
       let renderNode: VueNode;
@@ -910,7 +919,6 @@ export default defineComponent({
               </span>
             )}
             {selectorNode}
-
             {arrowNode}
             {clearNode}
           </div>