Comment 3 for bug 1903357

Here's a fix:

https://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/berick/lp1903357-angstcat-thaw-date-past

It includes 2 commits, one which allows you to clear the thaw date once a value has been applied (and have it actually update the model), then a second to enforce a future thaw date.