sync service: show the termination report debug info in the error logs

We do see lots of "broken channel" log lines for these two log
statements, and since I'm unclear why they happened, I'd like to add a
bit more logging to those.

Also makes the log level consistent, both are set to "warn" instead of
one warn and one error. Usually it's not a big deal because the only
error that may happen is that the channel is broken, indicating the task
died before, so there's no need to stop it manually.

crates/matrix-sdk-ui/src/sync_service.rs

@@ -161,7 +161,7 @@ impl SyncService {
 
             if stop_room_list {
                 if let Err(err) = room_list_service.stop_sync() {
-                    error!("unable to stop room list service: {err:#}");
+                    warn!(?report, "unable to stop room list service: {err:#}");
                 }
             }
 
@@ -176,7 +176,7 @@ impl SyncService {
 
             if stop_encryption {
                 if let Err(err) = encryption_sync.stop_sync() {
-                    warn!("unable to stop encryption sync: {err:#}");
+                    warn!(?report, "unable to stop encryption sync: {err:#}");
                 }
             }
 
@@ -406,12 +406,14 @@ impl SyncService {
     }
 }
 
+#[derive(Debug)]
 enum TerminationOrigin {
     EncryptionSync,
     RoomList,
     Scheduler,
 }
 
+#[derive(Debug)]
 struct TerminationReport {
     is_error: bool,
     has_expired: bool,