Expanding information upon "Disconnected from the server. Reload"

Is there any way to change the default disconnection message in Shinyapps, namely, "Disconnected from the server. Reload"?

Related Github issue: https://github.com/rstudio/shiny/issues/1828

Alternatively (though this may be even less likely), would it be possible to show a specific pop-up/modal with text on the main area of the app?

Thank you very much