fixed accidental folder deletion bug when using minikube delete --purge

[johnmatthiggins]

fixes #19769

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[minikube-bot]

Can one of the admins verify this patch?

[medyagh]

I think we kind of did a mistake in the previous release not to think about this, the rightthing to do is,
in the delete --purge code. we need to Check What folders we are deleting...and if there is any folder other than minikube sub folders we should Warn the user if they wanna proceed.

[johnmatthiggins]

I noticed you left a comment on issue #19769 that describes an alternative solution:

alternatvely we should enforce users to set their minikube home folder to something that is called .minikube, so in the purge we only delete .minikube folder

I replied to the comment detailing why I think this alternative is the best approach and that adding a prompt while keeping the current MiniPath() behavior will actually be not aid in the overall goal of getting users to use a directory named ".minikube" as the config directory.

I'm a little confused about what solution to pursue of the two options presented in the comment. If you want a yes/no prompt that verifies whether the user wants to delete a directory when it's not named ".minikube" then I can rewrite the code. Just let me know, because I'm a little unclear on what direction I should go in.

[johnmatthiggins]

Closing this because it has been replaced by PR #20045