Camera: Fix testCameraManagerOpenAllCameras for conflicting devices

When 2 camera devices conflict with each other, opening of one device
could result in the other device to be evicted.

Fix the test for such case by resetting the mock before calling close().

Test: Run testCameraManagerOpenAllCameras and pass
Bug: 78483746
Change-Id: I82a93fe3fffbb3303b30cf781ed17e91aa780ac0
1 file changed