fix(record-store): ensure record sync before marking as stored

Added proper file sync after writing record to disk.
Fixed race condition in can_store_after_restart test.
Improved error handling for write/sync operations.
This change ensures that records are properly synced to disk
before being marked as stored, preventing potential data loss
in case of system crashes or unexpected restarts.

ant-networking/src/record_store.rs

@@ -687,17 +687,18 @@ impl NodeRecordStore {
         spawn(async move {
             let key = r.key.clone();
             if let Some(bytes) = Self::prepare_record_bytes(r, encryption_details) {
-                let cmd = match fs::write(&file_path, bytes) {
+                let cmd = match fs::write(&file_path, bytes)
+                    .and_then(|_| fs::File::open(&file_path).and_then(|f| f.sync_all()))
+                {
                     Ok(_) => {
                         // vdash metric (if modified please notify at https://github.com/happybeing/vdash/issues):
                         info!("Wrote record {record_key2:?} to disk! filename: {filename}");
-
                         LocalSwarmCmd::AddLocalRecordAsStored { key, record_type }
                     }
                     Err(err) => {
                         error!(
-                        "Error writing record {record_key2:?} filename: {filename}, error: {err:?}"
-                    );
+                            "Error writing/syncing record {record_key2:?} filename: {filename}, error: {err:?}"
+                        );
                         LocalSwarmCmd::RemoveFailedLocalRecord { key }
                     }
                 };
@@ -1058,6 +1059,8 @@ mod tests {
 
     async fn testing_thread(r: ArbitraryRecord) {
         let r = r.0;
+
+        // Create channels with proper receivers
         let (network_event_sender, mut network_event_receiver) = mpsc::channel(1);
         let (swarm_cmd_sender, _) = mpsc::channel(1);