Adjust the sizes of user education for large screens / landscape

When the stack is expanded on large screen devices, the bubbles are
inset from the edge of the screen. Due to this the rounded corner
on the user education view for the manage button is kinda squished
with the text. To make this look better, increase the width of this
user education view when on large screens. Use this value for
landscape on phone as well because we were doing match parent in
that scenario and it looks bad.

Additionally, on all form factors, increase the padding at the end
of the view. This makes it look a little better especially for
languages where the words can be long.


Bug: 223635730
Test: visual - force user education to show for bubbles, take a look
               at how the stack & manage user education views look
               on tablet and phone (in landscape and portrait).
Change-Id: I7bcdfff7341b8c6acad0f6f5fdcbc7fd24aa4627