Restore removed announce key in conv_response array in include/conversation
Restore removed announce key in conv_response array in include/conversation

- Follow-up to #8329
annando/friendica,fabrixxm/friendica,annando/friendica,annando/friendica,annando/friendica,annando/friendica,friendica/friendica,tobiasd/friendica,friendica/friendica,friendica/friendica,tobiasd/friendica,tobiasd/friendica,fabrixxm/friendica,fabrixxm/friendica,tobiasd/friendica,friendica/friendica,fabrixxm/friendica,friendica/friendica,tobiasd/friendica,fabrixxm/friendica