Fixed EmulatedUserHal so it supports SwitchUserMessageType::VEHICLE_REQUEST am: 5d40b783d1 am: 645bd8a6fa am: d4918ea194

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1425311

Change-Id: I48a33bd0033c9d3c133fcdcbc026f53a957e94ac