`findDocumentsInternal` inherits `hasExpiredRecipients` from `ZFindDocumentsRequestSchema`
but the handler did not destructure or forward it to `findDocuments`, so callers requesting
the filter received unfiltered results.
Destructure the field from input and pass it through, matching the public `findDocuments`
route.
This PR is handles the changes required to support envelopes. The new
envelope editor/signing page will be hidden during release.
The core changes here is to migrate the documents and templates model to
a centralized envelopes model.
Even though Documents and Templates are removed, from the user
perspective they will still exist as we remap envelopes to documents and
templates.
ephraimduncan
Lucas Smith
David Nguyen