#37561 Do not load Shipment and Creditmemos collections on Order model

Author: Nuranto

app/code/Magento/Sales/Model/Order.php

@@ -1956,7 +1956,7 @@ public function getShipmentsCollection()
     {
         if (empty($this->_shipments)) {
             if ($this->getId()) {
-                $this->_shipments = $this->_shipmentCollectionFactory->create()->setOrderFilter($this)->load();
+                $this->_shipments = $this->_shipmentCollectionFactory->create()->setOrderFilter($this);
             } else {
                 return false;
             }
@@ -1973,7 +1973,7 @@ public function getCreditmemosCollection()
     {
         if (empty($this->_creditmemos)) {
             if ($this->getId()) {
-                $this->_creditmemos = $this->_memoCollectionFactory->create()->setOrderFilter($this)->load();
+                $this->_creditmemos = $this->_memoCollectionFactory->create()->setOrderFilter($this);
             } else {
                 return false;
             }