Bluetooth: Mesh: Health: Fix requiring specific Company ID

The Health Fault Test & Test Unacknowledged messages are supposed to
be sent for more than the Node Composition Data Company ID. It's true
that some PTS tests require the message to be ignored for
non-composition data ID, however that's something that should be
covered by the application that's used for testing, and not the
generic Health Server Code.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>