logs for checkpoint upsert failure (microsoft#19440)

Adds additional logs for checkpoint upsert failure

server/routerlicious/packages/services-core/src/mongoCheckpointRepository.ts

@@ -34,11 +34,25 @@ export class MongoCheckpointRepository implements ICheckpointRepository {
 			return;
 		}
 		const pointReadFilter = this.composePointReadFilter(documentId, tenantId);
-		await this.collection.upsert(
-			pointReadFilter,
-			{ [this.checkpointType]: JSON.stringify(checkpoint) },
-			null,
-		);
+		try {
+			await this.collection.upsert(
+				pointReadFilter,
+				{ [this.checkpointType]: JSON.stringify(checkpoint) },
+				null,
+			);
+		} catch (error: any) {
+			const err = new Error(`Checkpoint upsert error:  ${error.message?.substring(0, 30)}`);
+			Lumberjack.error(
+				"Unexpected error when writing checkpoint",
+				{
+					...getLumberBaseProperties(documentId, tenantId),
+					pointReadFilter,
+					checkpointType: this.checkpointType,
+				},
+				err,
+			);
+			throw error;
+		}
 	}
 
 	async removeServiceCheckpoint(documentId, tenantId): Promise<void> {