7bbed3890e
Updated EnvelopeHistoryQuery to include a new `Status` parameter for describing the envelope's status. Modified the `ReferenceType` property to return `ReferenceType.System` when neither the envelope's `User` nor the `Receiver` is defined. Updated ReadEnvelopeHistoryQuery to include the `Status` parameter and set default values of `null` for `Envelope` and `Receiver`, ensuring consistency with the base class.