B2B-2259: customAttributeMetadata GraphQl query has no cache identity

- attribute uniqueness is by primary key

Author: rganin

app/code/Magento/EavGraphQl/Model/Resolver/Cache/CustomAttributeMetadataIdentity.php

@@ -25,8 +25,9 @@ public function getIdentities(array $resolvedData): array
             foreach ($resolvedData['items'] as $item) {
                 if (is_array($item)) {
                     $identities[] = sprintf(
-                        "%s_%s",
+                        "%s_%s_%s",
                         EavAttribute::CACHE_TAG,
+                        $item['entity_type'],
                         $item['attribute_code']
                     );
                 }

app/code/Magento/EavGraphQl/Plugin/Eav/AttributePlugin.php

@@ -28,8 +28,9 @@ public function afterGetIdentities(Attribute $subject, array $result): array
             $result,
             [
                 sprintf(
-                    "%s_%s",
+                    "%s_%s_%s",
                     Attribute::CACHE_TAG,
+                    $subject->getEntityType()->getEntityTypeCode(),
                     $subject->getAttributeCode()
                 )
             ]