Prevent exit car mode from clearing projection entry.

When Telecom handles exiting car mode, we do not want to clear the automotive projection car mode app entry. This CL adds logic to prevent that and a unit test to confirm that SetAutomaotiveProjection overrides handleEnterCarMode on Telecom's side.

Bug: 268218294
Test: atest CarModeTrackerTest#testInterleaveCarModeAndProjectionMode
Change-Id: I0706b531b53223e8d6217d9a2ba2712cbc97e0e2
2 files changed