[PM-27662] Add revision date to policy response model (#6602)

Author: shane-melton

src/Api/AdminConsole/Models/Response/Organizations/PolicyResponseModel.cs

@@ -30,11 +30,13 @@ public PolicyResponseModel(Policy policy, string obj = "policy")
         {
             Data = JsonSerializer.Deserialize<Dictionary<string, object>>(policy.Data);
         }
+        RevisionDate = policy.RevisionDate;
     }
 
     public Guid Id { get; set; }
     public Guid OrganizationId { get; set; }
     public PolicyType Type { get; set; }
     public Dictionary<string, object> Data { get; set; }
     public bool Enabled { get; set; }
+    public DateTime RevisionDate { get; set; }
 }