could not run pseudobulk on imported data

[cynthialiu]

I encountered an error when I run pseudobulk pipeline on my imported data from my local cache directory.

[myushen]

In summary, a pseudobulk parameter (default is FALSE) has been added to the import API, allowing users to choose whether to generate pseudobulk data dynamically.

[stemangiola]

P.S. Remember to link the PR with the issue. I have done this time.