[Due for payment 2025-05-08] Improve Mobile-Expensify `fetch-depth:` in `cherryPick.yml`

[AndrewGable]

Problem

In cherryPick.yml we have a fetch-depth: 0 if we are cherry picking a Mobile-Expensify pull request. This causes cherry picks to Mobile-Expensify to be slower than App pull requests.

Solution

We need to improve the Fetch history of relevant refs if cherry picking an App change to figure out what the "relevant refs" are when using the submodule.

cc @roryabraham

[roryabraham]

We encountered this yesterday for a test CP of an App-Test-Fork PR. It ended up being fixed by just syncing all the tags from the upstream into the forks (for both App-Test-Fork and Mobile-Expensify-Test-Fork). So I suspect this may have been a fork-only issue. I'd like to try just removing the full fetch and trying out a Mobile-Expensify staging CP to see if it works.

[roryabraham]

Verified that this is fixed ✅