Camera: Hotplug - conditionally transition to PRESENT when clients disconnect

Fixes an issue where a client could unconditionally transition to PRESENT
after a client disconnects, even though the underlying HAL status was actually
NOT_PRESENT or ENUMERATING.

Bug: 8780114
Change-Id: I68adb5fc819eec3b046ddcb2507b84bedc999a0f
2 files changed