numberOfChunks not updated in the record after chunks uploaded successfully but before committing the upload

[ghost]

The property "record.numberOfChunks" is not reflecting the number of successful chunks uploaded against the record when an upload session is active. The numberOfChunks returned is 0 until the client calls CommitChunkUpload.

What happened:
numberOfChunks is not updated to reflect the number of chunks that have been uploaded so far during a chunk upload session.

What you expected to happen:
The numberOfChunks to be incremented every time a chunks has been successfully uploaded to Open Saves.

How to reproduce it (as minimally and precisely as possible):
Create a record
Initialize an upload session
Upload one chunk
Get the record
record.numberOfChunks=0 // was expecting 1

Anything else we need to know?:

Environment:

• Open Saves version: latest
• Kubernetes version (use kubectl version): N/A
• Cloud provider or hardware configuration: N/A
• Install method (yaml/helm): N/A
• Troubleshooting guide log(s): N/A
• Others:

[yuryu]

Let's add a new method to retrieve the current status of a chunked upload session.