PasswordInput: Styles on Show/Hide Button

[silvalaura]

Component
PasswordInput

Description of bug
Styles on the Show/Hide password Button.

Steps to reproduce problem 1

• Open PasswordInput;
• Write a long password that fills the entire input;
• Focus on the Button;
• Note that the focus boundary is on the text;
  

Steps to reproduce problem 2

• Open PasswordInput;
• Set different text size for the showPasswordButtonText and hidePasswordButtonText props;
• Notice that the styles (width) are incorrect;
  
  
  
  

Note:
The width depends on the showPasswordButtonText props.