Update rejection header for read and confirm envelopes

Add logic to display a specific rejection message when an envelope is rejected as part of a "read and confirm" process. The header now distinguishes between external, confirmation-related, and default rejection scenarios for improved user feedback.

EnvelopeGenerator.Web/Views/Envelope/EnvelopeRejected.cshtml

@@ -9,12 +9,14 @@
 @using EnvelopeGenerator.Web.Extensions
 @using Newtonsoft.Json
 @using Newtonsoft.Json.Serialization
+@using EnvelopeGenerator.Domain.Interfaces;
 @model EnvelopeReceiverDto;
 @{
 	var envelope = Model.Envelope;
 	var document = Model.Envelope?.Documents?.FirstOrDefault();
 	var sender = Model.Envelope?.User;
 	var isExt = ViewBag.IsExt ?? false;
+	bool IsReadAndConfirm = Model!.Envelope!.IsReadAndConfirm();
 }
 <div class="page container p-5">
     <header class="text-center">
@@ -54,7 +56,11 @@
 				c-5.791,5.79-15.176,5.79-20.969,0l-30.32-30.322l-11.676,11.676l30.32,30.32c5.79,5.79,5.79,15.178,0,20.969L299.11,404.045z"/>
 			</svg>
         </div>
-		<h1>@(isExt ? _localizer.RejectionInfo1Ext() : _localizer.RejectionInfo1())</h1>
+		<h1>@(isExt
+			? _localizer.RejectionInfo1Ext()
+			: IsReadAndConfirm
+				? _localizer.RejectionInfo1ForConfirmation()
+				: _localizer.RejectionInfo1())</h1>
     </header>
     <section class="text-center">
 		<div class="card-body p-0 m-0 ms-4">