feat:修复资金费的判断问题

@@ -840,6 +840,9 @@ class CmBroker
             $res = $this->exBroker->getPremium("ANY");
             if (isset($res['data'])) {
                 foreach ($res['data'] as $key => $value) {
+                    if (!isset($value['instId']) || !str_ends_with($value['instId'], 'USDT-SWAP')) {
+                        continue;
+                    }
                     $prem = Premium::transferOkx($value, function ($symbol) {
                         return $this->getSymbolSt($symbol);
                     });