Flow image unavailable when using flows publish method

[CodingOnWindowsOS]

Describe the bug
When using the flows publish method, the flow image is not available on Tableau Cloud. This occurs when using a .tfl and .tflx file. The image is available when manually published through Tableau prep using either file type. A flow image is a diagram of the steps created to produce a desired output. This is what the user sees when creating the flow. When zipping and subsequently unzipping the flow file this is the flowGraphThumbnail.svg. The image renders on local machine.

Versions
Details of your environment, including:

• Tableau Cloud
• Python 3.12.3
• TSC library version 3.24

To Reproduce
server.flows.publish( flow_item=new_flow, file=Path('some_flow.tfl'), mode='CreateNew' )

Results
Flow image unavailable