Update user on user switched for color inversion

When the user switches, also update the user associated
with the listener for color inversion of the rounded
corners and display cutout.

Fixes: 110037623
Test: manually switch to secondary user, set color inversion on/off
and see cutout is the correct color (it should always be black)

Change-Id: I53dcffa374cb46c212f25d402c7e8a35da667624