fix: 组件重复展示时, useMouseHover.tsx 不起作用 #59
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使用了 useEffect 来处理事件监听器的添加和移除。这样可以确保:
当组件显示(挂载)时,mouseenter 和 mouseleave 事件监听器会被添加到对应的元素上。
当组件消失(卸载)时,这些事件监听器会被自动清理,避免了内存泄漏和潜在的 bug。
当 elementRef.current 变化时(例如组件重新渲染后 ref 指向了新的 DOM 元素),useEffect 会重新执行,为新的元素正确地挂载事件。