Add ability to customize whether to close SearchBar dropdown component on outside click

[acheroncrypto]

Problem

Dropdowns of the SearchBar component get closed when clicked outside of the component. This is usually what we want but for custom components like FromSeed, users may want to keep the dropdown open if they need to copy something from the page.

Solution

Add a way to customize the closing behavior of the Searchbar dropdowns and change FromSeed component to be closed by explicit clicking via a close button.