fix ArrowKeyMovementMethodTest KeyEvent inconsistencies

The KeyEvents used in various ArrowKeyMovementMethod tests were inconsistent:
- KeyEvent.ACTION_UP sent to onKeyDown()
- meta state in KeyEvent does not match meta state in MetaKeyKeyListener

This commit should correct all of those situations.

Bug: 13591495
Change-Id: Ifcbfb3ec2d181e6d2db5b570dc466e0fa9c8a758