Correct Sharesheet icon and badge sizing

SimpleIconFactory previously used fixed resources to render
icons and badges. Resolver and Chooser need different icon and
badge dimensions. This cause scaling issues. Move those sizes to
a styleable attr. New dimensions align with design red lines.

Test: manual
Fixes: 155813501
Change-Id: I765ba7aab1346eacf9e1cf7b6cdbfbbb14dbc3bb