Check where Dialog closed by double escape should be handled

[nicodh]

Followup to #4365

It turns out that you can close any Dialog in Chrome by firing excape key twice. We should make sure that this causes no unexpected behaviour. Probably only Dialogs with canEscapeKeyClose={false} are affected

[maxphilippov]

Sorry, that's something that should be probably fixed by my #4205. I'll try to get back with an update in a couple of days, cause I did change some code mentioned in #4365 discussion.

[Simon-Laux]

I just confirmed that double escape closes dialog where we have escape disabled. (welcome screen and login screen)