Fix incorrect icon alignment on shelf

ExpandableNotificationRow set the scrollX of notification icon in shelf while the notification is
swiped, but didn't set it back when reset without animation(ex: screen
off device).

Reset the scrollX of icon in shelf.

Test: runtest systemui
Change-Id: I05a428a7502de1618a7929b71a832c9e945a6aff
Fixes: 77569193