feat(Message): Add "DismissMode" to extend the closing effect

[momijijin]

Is there an existing issue for this?

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Is your feature request related to a problem? Please describe the problem.

Describe the solution you'd like

To avoid any destructive changes, the "MessageOption" class has added the "DismissMode" attribute to control whether the placeholder remains after closing, and the default value of this attribute is consistent with the previous behavior.

Additional context

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