fix<CollapseContainer>: v-show 才不会丢失目标容器 (#2584)

src/components/Container/src/collapse/CollapseContainer.vue

@@ -73,7 +73,7 @@
               {props.loading ? (
                 <Skeleton active={props.loading} />
               ) : (
-                show.value && <div class={`${prefixCls}__body`}>{slots.default?.()}</div>
+                <div class={`${prefixCls}__body`} v-show={show.value}>{slots.default?.()}</div>
               )}
             </CollapseTransition>
           </div>