Message组件鼠标悬停不销毁（Message component is not destroyed when the mouse hover）

[zguiyang]

This function solves the problem (这个功能解决的问题)

鼠标悬停在message信息组件上时，此信息永不消失，鼠标移开了间隔一定时间才消失。使用场景：当提示信息过长时，用户可复制此提示信息。When you hover over a message component, the message never disappears until the mouse moves away for a certain amount of time. Usage scenario: When the message is too long, you can copy the message

Expected API (期望的 API)

鼠标悬停，当前提示信息实例不销毁
The current prompt instance is not destroyed when the mouse hover over it