Is there a way to detect that a user has closed the smart alert dialog box?

Let's say my event-based addin caused this dialog to appears after user clicks send because they haven't fulfilled certain conditions.

Ref: https://learn.microsoft.com/en-us/office/dev/add-ins/outlook/onmessagesend-onappointmentsend-events?tabs=windows#soft-block

I would like a function in the plugin's taskpane to run immediately after user has closed the dialog e.g. by clicking 'x' or Don't Send.

Is it possible? If not, are there plans to enable this and where can I read more of it?

P.s., I'm developing my addin in React Typescript.