Update more dialog themes to use medium headline font.

Updates more of the DeviceDefault Dialog themes to use
DialogWindowTitle.DeviceDefault and other related styles.

Also updates DialogWindowTitle.DeviceDefault to use the medium headline
font config for its fontFamily to enable OEM customization.

Bug: 70296667
Test: visual inspection
Change-Id: I77adba91d62caf327f96e237d1dd30126ef555c6