camera: override caf/flash settings for change in scene mode.
camera: override caf/flash settings for change in scene mode.

Steps to replicate the issue:

    1. Run the camera.
    2. Change scene mode besides Auto.
    3. Out of camea using Back key.
    4. Run the camera again.
    5. CAF is not working.

Bug: 7304154
Change-Id: I53264913311579821edc3aa9c8a01195bec414e5
Signed-off-by: Iliyan Malchev <b9962a40c76f189681da2829a74a26cab77021ea@google.com>

maruos/android_device_lge_hammerhead,maruos/android_device_lge_hammerhead,maruos/android_device_lge_hammerhead,maruos/android_device_lge_hammerhead