feat(RemoveHistoryHandler): add filtering by receiver signature in RemoveHistoryHandler

Added logic to filter history records by receiver signature when provided in
RemoveSignatureNotification. This ensures only relevant signed entries are deleted.

EnvelopeGenerator.Application/Common/Notifications/RemoveSignature/Handlers/RemoveHistoryHandler.cs

@@ -27,12 +27,18 @@ public class RemoveHistoryHandler : INotificationHandler<RemoveSignatureNotifica
     /// <param name="notification"></param>
     /// <param name="cancel"></param>
     /// <returns></returns>
-    public async Task Handle(RemoveSignatureNotification notification, CancellationToken cancel)
+    public Task Handle(RemoveSignatureNotification notification, CancellationToken cancel)
     {
-        await _repo.DeleteAsync(hists 
-            => hists
+        return _repo.DeleteAsync(hists =>
+        {
+            hists = hists
                 .Where(hist => hist.Envelope!.Uuid == notification.EnvelopeUuid)
-                .Where(hist => hist.Status == EnvelopeStatus.DocumentSigned),
-                cancel);
+                .Where(hist => hist.Status == EnvelopeStatus.DocumentSigned);
+
+            if (notification.ReceiverSignature is string signature)
+                hists = hists.Where(hist => hist.Receiver!.Signature == signature);
+
+            return hists;
+        }, cancel);
     }
 }