Fix a padding issue for bubble user education in RTL

The education view is placed on the right hand side of the screen
so the padding calculation to align the manage button in the education
view with the real manage button is slightly different.

Bug: 230579507
Test: manual - force education for bubbles to show, set RTL language,
               open up stack and look at manage button education
Change-Id: I282ed7eb2014d5d1a6d2b428572e495ce0d77c78