Up the size of the phone icon for recent calls.

Retrieving the bitmap for a VectorDrawable will render it the size that
the VectorDrawable is hardcoded as. As a result, this makes the icon
pixelated when displayed on the home screen. To fix, up the default size
of the icon.

Test: manually tested
Change-Id: I9a657bc46630e6607f523a18eb72b957c3acd5eb