Exporter: Investigate effect of using `/Workspace` path everywhere

[alexott]

We need to investigate how this will affect the exporter:

Historically, users were required to include the /Workspace path prefix for some Databricks APIs (%sh) but not for others (%run, REST API inputs). Now, users can provide workspace paths with the /Workspace prefix everywhere in Databricks. Old references to paths without the /Workspace prefix are redirected and will continue to work. Databricks recommends that all workspace paths use the /Workspace prefix to differentiate them from Volume and DBFS paths.