[fuzz] Allow SendAnnouncementSigs events in chanmon_consistency

Because of the merge between peer reconnection and channel monitor
updating channel restoration code, we now sometimes generate
(somewhat spurious) announcement signatures when restoring channel
monitor updating. This should not result in a fuzzing failure.

Author: TheBlueMatt

fuzz/src/chanmon_consistency.rs

@@ -603,6 +603,9 @@ pub fn do_test<Out: test_logger::Output>(data: &[u8], out: Out) {
 						events::MessageSendEvent::SendFundingLocked { .. } => {
 							// Can be generated as a reestablish response
 						},
+						events::MessageSendEvent::SendAnnouncementSignatures { .. } => {
+							// Can be generated as a reestablish response
+						},
 						events::MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {
 							// Can be generated due to a payment forward being rejected due to a
 							// channel having previously failed a monitor update
@@ -623,6 +626,7 @@ pub fn do_test<Out: test_logger::Output>(data: &[u8], out: Out) {
 							events::MessageSendEvent::SendRevokeAndACK { .. } => {},
 							events::MessageSendEvent::SendChannelReestablish { .. } => {},
 							events::MessageSendEvent::SendFundingLocked { .. } => {},
+							events::MessageSendEvent::SendAnnouncementSignatures { .. } => {},
 							events::MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
 							_ => panic!("Unhandled message event"),
 						}
@@ -635,6 +639,7 @@ pub fn do_test<Out: test_logger::Output>(data: &[u8], out: Out) {
 							events::MessageSendEvent::SendRevokeAndACK { .. } => {},
 							events::MessageSendEvent::SendChannelReestablish { .. } => {},
 							events::MessageSendEvent::SendFundingLocked { .. } => {},
+							events::MessageSendEvent::SendAnnouncementSignatures { .. } => {},
 							events::MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
 							_ => panic!("Unhandled message event"),
 						}
@@ -656,6 +661,7 @@ pub fn do_test<Out: test_logger::Output>(data: &[u8], out: Out) {
 							if *node_id != drop_node_id { true } else { panic!("peer_disconnected should drop msgs bound for the disconnected peer"); }
 						},
 						events::MessageSendEvent::SendFundingLocked { .. } => false,
+						events::MessageSendEvent::SendAnnouncementSignatures { .. } => false,
 						events::MessageSendEvent::PaymentFailureNetworkUpdate { .. } => false,
 						_ => panic!("Unhandled message event"),
 					};