Strengthen a11y text location test

Use a German strong 's' in all-caps to create a mismatch
between mText and mTransformed in the TextView that
displays it. This new test fails without a fix to code
that generates text positions for accessibility services.

Bug: 69044691
Test: The new test passes
Change-Id: I49bd85fcd0bebeb373d623d486140c79e1292fea
2 files changed