fix for #38315 issue (Missing indexing of required columns in catalog_product_entity_int table)

Author: rostilos

app/code/Magento/Catalog/etc/db_schema.xml

@@ -134,6 +134,7 @@
         </constraint>
         <index referenceId="CATALOG_PRODUCT_ENTITY_INT_ATTRIBUTE_ID" indexType="btree">
             <column name="attribute_id"/>
+            <column name="entity_id"/>
         </index>
         <index referenceId="CATALOG_PRODUCT_ENTITY_INT_STORE_ID" indexType="btree">
             <column name="store_id"/>