Do not ask twice for the project root when calling
projectile-run-ielm, projectile-run-term or projectile-run-vterm
from outside a projectile folder.

Use projectile-with-default-dir at the beginning of those functions
to prevent calling projectile-acquire-root twice.

When running one of those functions (e.g. projectile-run-vterm) from a folder outside a projectile root (e.g. my home folder) I was being ask twice in the minibuffer to provide a projectile project root. This was caused because projectile-acquire-root was being called twice without setting the default folder.

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by checking the relevant checkboxes):

• The commits are consistent with our contribution guidelines
• You've added tests (if possible) to cover your change(s)
• All tests are passing (eldev test)
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• You've updated the readme (if adding/changing user-visible functionality)

Thanks!