[Storage - File Share] Highlevel Node.js only downloadToBuffer should succeed - without passing the buffer failing in nightly runs

Storage - File Share nightly test runs are failing with:

> Error message:
> read ECONNRESET
> 
> Stack trace:
>Error: read ECONNRESET
    at TLSWrap.onStreamRead (internal/stream_base_commons.js:209:20)
      


For more details check here:

- https://dev.azure.com/azure-sdk/internal/_build/results?buildId=2175247&view=results