Entfernen der RejectedReason und IsRejected Eigenschaften aus der EnvelopeReceiver Entität und DTO.

EnvelopeGenerator.Domain/Entities/EnvelopeReceiver.cs

@@ -40,12 +40,6 @@ namespace EnvelopeGenerator.Domain.Entities
         [Column("CHANGED_WHEN", TypeName = "datetime")]
         public DateTime? ChangedWhen { get; set; }
 
-        [Column("REJECTION_REASON")]
-        public string? RejectionReason { get; set; }
-
-        [NotMapped]
-        public bool IsRejected => RejectionReason is not null;
-
         [ForeignKey("EnvelopeId")]
         public Envelope? Envelope { get; set; }