The Channel Terminated Command does not validate the CCM status

[ishantiw]

Description

The BaseCCChannelTerminatedCommand command does not validate the status of the incoming CCM. This means that, if a CCM of this type is bounced, the command will try to add the sending chain that bounced the request to the TerminatedStateStore.
In this command, this does not pose a major problem. If the chain sent this CCM to the target chain, it likely already terminated the target chain in the first plane. However, in other cases not verifying the status may be problematic.

Recommendation
check the status of the CCM in the BaseCCChannelTerminatedCommand verify method, and only process the request if the status is OK.

Acceptance Criteria

v6.0.0-beta.2