Treat partially paid expired orders as overpaid orders (Z#23147757) (#3990)

* Treat partially paid expired orders as overpaid orders (Z#23147757)

* Use is_overpaid from annotate_overpayments in OrderFilterForm

* Revert change to pending sum

* Show warning on order page

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Co-authored-by: Mira Weller <weller@rami.io>

src/pretix/control/templates/pretixcontrol/order/index.html

@@ -124,6 +124,13 @@
                 </button>
             </div>
         </form>
+    {% elif order.status == "e" and order.payment_refund_sum != 0 %}
+        <div class="alert alert-warning">
+            {% blocktrans trimmed with amount=order.payment_refund_sum|money:request.event.currency %}
+                This order is expired even though it received payments of {{ amount }}. You can choose to refund
+                the money below or reactivate it by extending the payment deadline.
+            {% endblocktrans %}
+        </div>
     {% endif %}
 
     <div class="row">