Okay, so the reason that the signup was not appearing in this second round of testing is because I had the `mitosheet-helper-private` package on my computer.

[naterush]

Okay, so the reason that the signup was not appearing in this second round of testing is because I had the mitosheet-helper-private package on my computer.

However, even with the mitosheet-helper-private removed, when on dev, the signup modal did not appear for me.

Developer experience improvement iteration ideation: Adding a command to the effect of python -m mitosheet reset-mito-except-user-id which will clear out the user.json except for the user_id (so we don't clog up Mixpanel), which removes the user.json, uninstalls the mito packages, etc.

Originally posted by @aarondr77 in https://github.com/mito-ds/monorepo/issues/418#issuecomment-1201582285