Update QS top padding to use centralizedStatusBarHeight refactor

When centralizedStatusBarHeight flag was flipped, QS and NSSL were using different values for the status bar height, leading to a visual discrepancy with the notification scrim expanded.

Bug: 321755315
Test: manually verified with flag on and off
Flag: NONE
Change-Id: Iafd5c1441d4ff749dd08b7f8de81a0012ac2c135