feat(PDFBurner): support unstructured annotations and simplify processing

- Added `UnstructuredAnnotations` property to handle annotations without structured IDs
- Changed default `hasStructuredID` to `False`, set to `True` only after successful parsing
- Updated `AddInstantJSONAnnotationToPDF` to process annotations directly instead of grouping by receiver
- Simplified logic for reversing annotations and applying seal positioning

EnvelopeGenerator.BBTests/frmFinalizePDF.vb

@@ -8,6 +8,7 @@ Imports Newtonsoft.Json.Linq
 Imports DigitalData.Core.Abstraction.Application
 Imports EnvelopeGenerator.Infrastructure
 Imports Microsoft.EntityFrameworkCore
+Imports System.Text
 
 Public Class frmFinalizePDF
     Private Const CONNECTIONSTRING = "Server=sDD-VMP04-SQL17\DD_DEVELOP01;Database=DD_ECM;User Id=sa;Password=+bk8oAbbQP1AzoHtvZUbd+Mbok2f8Fl4miEx1qssJ5yEaEWoQJ9prg4L14fURpPnqi1WMNs9fE4=;"
@@ -104,7 +105,15 @@ Public Class frmFinalizePDF
 
             Process.Start(oNewPath)
         Catch ex As Exception
-            MsgBox(ex.Message, MsgBoxStyle.Critical)
+            Dim exMsg As StringBuilder = New StringBuilder(ex.Message).AppendLine()
+
+            Dim innerEx = ex.InnerException
+            While (innerEx IsNot Nothing)
+                exMsg.AppendLine(innerEx.Message)
+                innerEx = innerEx.InnerException
+            End While
+
+            MsgBox(exMsg.ToString(), MsgBoxStyle.Critical)
         End Try
 
     End Sub