Fix commit for DiskObjectStorage (ClickHouse#50599)

Author: alesapin

src/Disks/ObjectStorages/DiskObjectStorage.cpp

@@ -596,7 +596,8 @@ void DiskObjectStorage::writeFileUsingBlobWritingFunction(const String & path, W
 {
     LOG_TEST(log, "Write file: {}", path);
     auto transaction = createObjectStorageTransaction();
-    return transaction->writeFileUsingBlobWritingFunction(path, mode, std::move(write_blob_function));
+    transaction->writeFileUsingBlobWritingFunction(path, mode, std::move(write_blob_function));
+    transaction->commit();
 }
 
 void DiskObjectStorage::applyNewSettings(

src/Disks/ObjectStorages/DiskObjectStorageTransaction.cpp

@@ -710,8 +710,6 @@ void DiskObjectStorageTransaction::writeFileUsingBlobWritingFunction(
         metadata_transaction->createMetadataFile(path, blob_name, object_size);
     else
         metadata_transaction->addBlobToMetadata(path, blob_name, object_size);
-
-    metadata_transaction->commit();
 }