Fix squished user switcher text view.

When keyboard is showing and display size is high, the user text view is
squished. I made a one line change here such that the parent view can
respect the size the of the text view.

Fixes: 264820084
Test: set security method to password set various display sizes to see
how it looks in the bouncer for tablet.

Change-Id: Ib4f0f5768927422426601eb30a936b7908f8ac21