Remove say command one message limit

[xsebek]

• remove the say command limitation that only keeps one last said message in hearing robot logs
• add test case from saybot demo #1593
  • add correct behavior check to scenario objective and integration test
• closes log messages missing from "say" with multiple robots from same template #1592
• closes saybot demo #1593
• see the original merge request Improve say, add listen command and F5 messages #565 for context

Co-authored-by: Karl Ostmo [email protected]
Co-authored-by: Brent Yorgey [email protected]

[byorgey]

Maybe this is simpler? (It would have been simpler before, too...)

            addToRobotLog r = evalState r $ do
              hasLog <- hasCapability $ CExecute Log
              hasListen <- hasCapability $ CExecute Listen
              rid <- use robotID
              when (hasLog && hasListen) $
                robotInfo . robotMap . at rid . _Just . robotLog %= (|> m)