NumberPicker truncates the edited value.

1. NumberPicker aims to reach the specified max width and height.
   If the max width was not specified, the picker computes it by
   measuring the widest value it will show. However, the case for
   recognizing whether the max width is specified incorrect, hence
   the max width was never measured.

bug:6193549

Change-Id: If67352a651e8d4a1d060868c876316e1c0e9bd0b