Subscribed to subarray 1 sensor, but recorded subarray 2 sensor

[danielczech]

On 2021-11-15 at 01:31:16 local time, we subscribed to m000_target but received array_2:m000_target (with the consequence that a target was set for array_2, which was not configured at the time. katcp_server logs show that m000 was indeed part of the currently active array_1 and not the inactive array_2. Further investigation is needed to determine the cause of this.