[multi-repo] Shallow clones are not inflated

[svenefftinge]

Bug description

When using a multi-repo setup, shallow clones on additionalRepositories don't get inflated on workspace start.

Steps to reproduce

Start a workspace on https://gitpod.io/#https://github.com/svenefftinge/multi-repo-sub1
and do git log in the terminal of one of the subrepos.

Workspace affected

No response

Expected behavior

All cloned repositories should be fully fetched.

Example repository

https://github.com/svenefftinge/multi-repo-sub1

Anything else?

Worth checking if other operations we do on after clone are also not executed on the additionalRepositories.