message: camera: set correct param to set camera mode
diff: @@ -136,7 +136,8 @@ CameraImpl::make_command_set_camera_mode(float mavlink_mode)
  MAVLinkCommands::CommandLong cmd_set_camera_mode {};
  cmd_set_camera_mode.command = MAV_CMD_SET_CAMERA_MODE;
  - cmd_set_camera_mode.params.param1 = mavlink_mode;
  + cmd_set_camera_mode.params.param1 = 0.0f; // Reserved, set to 0
  + cmd_set_camera_mode.params.param2 = mavlink_mode;
  cmd_set_camera_mode.target_component_id = MAV_COMP_ID_CAMERA;
  return cmd_set_camera_mode;
  