ClayDropdown should close when clicked on `document` on mobile and others

[matuzalemsteles]

Summary

ClayDropdown currently only listens to document events to close the dropdown.

Expected behavior

The dropdown should close in the following use cases:

• Dropdown should close when clicked on document on mobile
• When pressing ESC you should close the dropdown *
• The dropdown should close when you click on an iframe on the screen *

NOTE: * These are use cases collected from LPS-81389

Current behavior

The dropdown does not close in the above use cases.