fix: set default x12 partner for item in billing manager (openemr#7502)

interface/billing/billing_report.php

@@ -1133,7 +1133,7 @@ function criteriaSelectHasValue(select) {
                                         )
                                     );
                                     $count = 0;
-                                    $default_x12_partner = $iter['ic_x12id'] ?? null;
+                                    $default_x12_partner = $iter['x12_partner_id'] ?? null;
                                     $prevtype = '';
 
                                     while ($row = sqlFetchArray($result)) {