disable email verification button after initial click in UserProfileForm#1151

pankaj-basnet wants to merge 6 commits intowger-project:masterwger-project/flutter:masterfrom

pankaj-basnet:fix/prevent-duplicate-verification-requestspankaj-basnet/wger-fitness-gym-app--opensource-Frontend-Flutter-mobile-app-:fix/prevent-duplicate-verification-requestsCopy head branch name to clipboard