Fix localhost domain issue in economically unviable refund emails

Updated all economically unviable refund email notifications to use
create_shop_context_request() instead of passing env_request directly
or creating DummyRequest objects. This ensures emails are sent from
the proper shop domain instead of localhost.

Fixed in:
- Expired payment processing
- Underpayment processing
- Passive monitoring refund retries

make_post_sell/lib/crypto_watcher/__init__.py

@@ -2144,8 +2144,12 @@ def process_payment(
                             # Send refund email notification
                             if crypto_payment.invoice and crypto_payment.invoice.user:
                                 try:
+                                    # Create shop context request
+                                    email_request = create_shop_context_request(
+                                        env_request, crypto_payment
+                                    )
                                     send_refund_email(
-                                        env_request,
+                                        email_request,
                                         crypto_payment.invoice.user.email,
                                         crypto_payment,
                                         refund_details,
@@ -2904,8 +2908,12 @@ def process_payment(
                                 # Send refund email notification
                                 if crypto_payment.invoice and crypto_payment.invoice.user:
                                     try:
+                                        # Create shop context request
+                                        email_request = create_shop_context_request(
+                                            env_request, crypto_payment
+                                        )
                                         send_refund_email(
-                                            env_request,
+                                            email_request,
                                             crypto_payment.invoice.user.email,
                                             crypto_payment,
                                             refund_details,
@@ -3279,10 +3287,10 @@ def process_refund_confirmations(request, settings):
                                     # Send refund email notification
                                     if payment.invoice and payment.invoice.user:
                                         try:
-                                            # Create a basic request object for email context
-                                            from pyramid.testing import DummyRequest
-                                            email_request = DummyRequest()
-                                            email_request.registry = request.registry
+                                            # Create shop context request
+                                            email_request = create_shop_context_request(
+                                                request, payment
+                                            )
                                             send_refund_email(
                                                 email_request,
                                                 payment.invoice.user.email,