Fix clock being clipped when scaled down in new customization picker ui

Flag: com.android.systemui.shared.new_customization_picker_ui
Bug: 368291352
Test: manual test, turn on the flag, scroll wallpaper picker, observe
that clock is no longer clipped.

Change-Id: Id880c2a752e8b6cc5fb9337b4fe6e294d59687b1