Fix a bug where moving the cursor would not reset selection

This change updates suggestions when the cursor is moved.
It is now reasonable to remove the explicit test for
TextEntryState.isAcceptedDefault because it is now shielded
by mExpectingUpdateSelection : actually, this probably fixes
a long-standing bug.

Bug: 5337309
Change-Id: Iee4046420c6a88d1a07d428230f93c3ebef25c39