In BasePicker allow to pass the style for the focused element

[chakradhar2]

In one of our scenario, we do not want the BasePicker to be focused. So that we can add wrapper including the Icon with the BasePicker, which will appear as focused. If we add directly the wrapper, the inner basePicker also get a border on the focus. Which does not look good. Seems that currently focus style is kind of hard coded. Will it be possible to allow pass style for focus.