decode longdesc for manufacturer list page

Modules/Application/Model/ManufacturerInfoList.php

@@ -32,6 +32,11 @@ class ManufacturerInfoList extends ManufacturerInfoList_parent
     {
         parent::addCategoryFields($oManufacturer);
 
-        $oManufacturer->oxcategories__oxlongdesc = new Field($oManufacturer->getFieldData(Constants::D3_OXMANUFACTURERS_LONGDESC_FIELDNAME), Field::T_RAW);
+        $oManufacturer->oxcategories__oxlongdesc = new Field(
+            html_entity_decode(
+                $oManufacturer->getFieldData(Constants::D3_OXMANUFACTURERS_LONGDESC_FIELDNAME) ?? ''
+            ),
+            Field::T_RAW
+        );
     }
 }