fix: revert payment amount when switching away from Paid in Full

Switching from PAID to Pending/Partially Paid now calls revert-full-claim
first to undo the collected amount, then updates the status — so the
report totals stay accurate.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/Frontend/src/components/payments/payments-recent-table.tsx

@@ -724,6 +724,19 @@ export default function PaymentsRecentTable({
                                   const val = e.target.value as PaymentStatus;
                                   if (val === "PAID") {
                                     handlePayAbsoluteFullDue(payment.id);
+                                  } else if (payment.status === "PAID") {
+                                    // revert the full payment amount, then set the new status
+                                    fullPaymentMutation.mutate(
+                                      { paymentId: payment.id, type: "revert" },
+                                      {
+                                        onSuccess: () => {
+                                          updatePaymentStatusMutation.mutate({
+                                            paymentId: payment.id,
+                                            status: val,
+                                          });
+                                        },
+                                      }
+                                    );
                                   } else {
                                     updatePaymentStatusMutation.mutate({
                                       paymentId: payment.id,