Don't advance cursor when adding new line at start of node

Bug: 48735
Change-Id: I934888ce727258cf3feb3e28d822e507554da701
If cursor is obscured by toolbar, on keypress scroll to cursor.

Bug: 48735
Change-Id: I45028ed2f13148332518badd5f4647d4d652884e
Merge changes I45028ed2,I934888ce

* changes:
  If cursor is obscured by toolbar, on keypress scroll to cursor.
  Don't advance cursor when adding new line at start of node