Modal关闭动画

[tangtaoshadow]

• I have searched the issues of this repository and believe that this is not a duplicate.

What problem does this feature solve?

当我使用 Modal.method() #
包括：

Modal.info
Modal.success
Modal.error
Modal.warning
Modal.confirm

创建modal时，当modal弹出时有动画，但是在关闭Modal时没有动画，而是立即关闭🔻

What does the proposed API look like?

希望通过这种API创建的modal在关闭时可以有动画，这样用起来更流畅些💕，突然的关闭modal相当于抖屏💔，没有过渡的效果，Thanks♪(･ω･)ﾉ

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[github-actions]

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