Autofill works in Firefox but not Fennec

@refi64 that's correct, there isn't anything that Fennec needs to do as this aspect of the behaviour is entirely determined by 1Password. We could potentially update 1Password to recognize Fennec as a browser, but I want to be careful not to promise anything here. As I mentioned in my previous reply, there is a cost associated with supporting each browser that we add, even when the differences between browsers are relatively minor. It is something that I can review with my team though.