Fix issue with input closing when losing focus

[massimocode]

Several things to note:

• When the input box loses focus it closes, and the promise resolves with undefined. We simply reopen the input box if that is the case.
• When the user genuinely wants to close the wizard (by pressing escape), the promise resolves with undefined. Since we have no way of telling if this value undefined is because the user has cancelled the wizard or because the editor has lost focus, we have to assume the editor has lost focus (because that's what happens when we open the GitHub link).
• So how does the user genuinely close the wizard? We allow the user to cancel the wizard by typing esc and pressing enter. We check for this value and do not reopen the input box if this was what the user typed.

[shanalikhan]

yes that could be one option. thanks will publish the extension soon