Now Playing is too low on the lock screen

NOTE: on udfps devices while now playing + on pixel stand 2, and max density, there remains overlapping related to the assistant icon.

Test: manually test UI on Pixel Stand 2
Test: manually test UI by pushing song to NowPlaying via adb
Test: manually test on devices both with and without udfps, on large screen density and low density
Fixes: 230466568
Change-Id: I6f92c92f616363bf1812d221d31e614501b872df