The ReadOnly property logic was shifted from the Envelope entity
to the EnvelopeDto record, ensuring that read-only status is
determined at the DTO layer rather than in the data model.
- Add logic to skip access-code workflow if UseAccessCode is false
- Auto-authenticate receiver and show envelope immediately
- Preserve rejection and signed checks
- Keep existing behavior for access-code enabled envelopes
- Introduced AnnotationCreateDto for creation-specific properties
- AnnotationDto now inherits from AnnotationCreateDto and includes Id, AddedWhen, ChangedWhen, and ChangedWho
- Added Type property to AnnotationCreateDto
- remove CreateAnnotationCommand
