[ios] Fix the AdditionalNameTableViewCell tappable area

[kirylkaveryn]

This PR fixes the cell layout and increases the tappable zone so that when you tap on any cell area the text field activates.

Before:

After:

[biodranik]

Thanks! It's great to split different changes into different PRs if they're not dependent on each other ) Or even if they are, you can stack commits and PRs on top of each other.