Browser-laptop: keep URL in address field so user can edit when resolve fails

[bradleyrichter]

Did you search for similar issues before submitting this one?
No. But its new...

Describe the issue you encountered:

Brave clears the URL on this alert page which then makes it much more difficult to fix the URL and try again.

Expected behavior:

Bad URL stays in address bar.

• Platform (Win7, 8, 10? OS X? Linux distro?):

Mac OS latest

• Brave Version:

0.10.2

• Screenshot if needed:

[bbondy]

dupe of https://github.com/brave/browser-laptop/issues/2025 ?

[bradleyrichter]