Update Automotive specific instructions for "Disallow user switch"

User Switch has moved to Quick Settings and Car Settings no
longer has user a switch button. Therefore the CtsVerifier test
instruciton needs to be updated for Automotive.

Bug: 389038163
Flag: TEST_ONLY
Test: CtsVerifier - Device owner - Disallow user switch

Change-Id: I19bcfd4e8e98957e6e2df803bc900566c17cd7d6
1 file changed