Fixing Layout height for Private Space container

Screenshot at max Font, max Display Size:
Before:  https://screenshot.googleplex.com/BwtrU5xE5h63RKZ.png
After: https://photos.app.goo.gl/RXTvE6rM6PUx9wRK7

Bug: 311343337
Change-Id: I565c0c430b56e14f0fb1863b37c835c59c032730
Test: Manual