Refactor constant references across multiple files

Updated import statements and changed references from
`Domain.Constants` to `Value` in `APIEnvelopeJob.vb`,
`FinalizeDocumentJob.vb`, `HistoryModel.vb`, `EmailService.vb`,
and job scheduling files. This standardizes constant access
and improves code maintainability and readability.

EnvelopeGenerator.CommonServices/Models/HistoryModel.vb

@@ -1,5 +1,6 @@
 Imports System.Data.SqlClient
 Imports DigitalData.Modules.Base
+Imports EnvelopeGenerator.Domain.Constants
 Imports EnvelopeGenerator.Domain.Entities
 
 Public Class HistoryModel
@@ -28,7 +29,7 @@ Public Class HistoryModel
     End Function
 
     Public Function HasReceiverSigned(pEnvelopeId As Integer, pReceiverId As Integer) As Boolean
-        Dim oEnvelopeSigned As Integer = Domain.EnvelopeStatus.DocumentSigned
+        Dim oEnvelopeSigned As Integer = EnvelopeStatus.DocumentSigned
         Dim oSql = $"SELECT COUNT(T.GUID) 
             FROM TBSIG_ENVELOPE_HISTORY T 
             JOIN TBSIG_RECEIVER T2 ON T.USER_REFERENCE = T2.EMAIL_ADDRESS