MC-40777: Cannot save product in store view scope without Magento_Catalog::edit_product_design

Author: engcom-Echo

app/code/Magento/Catalog/Model/Product/Authorization.php

@@ -129,10 +129,7 @@ private function hasProductChanged(ProductModel $product, ?array $oldProduct = n
                 //No new value
                 continue;
             }
-            if ($attribute->getBackendType() == 'datetime' && $newValue === null) {
-                continue;
-            }
-            if (!in_array($newValue, $oldValues, true)) {
+            if ($newValue !== null && !in_array($newValue, $oldValues, true)) {
                 return true;
             }
         }

dev/tests/integration/testsuite/Magento/Catalog/Model/Product/AuthorizationTest.php

@@ -88,8 +88,8 @@ public function postRequestData(): array
                 [
                     'product' => [
                         'name' => 'simple_new',
-                        'custom_design' => '',
-                        'page_layout' => '',
+                        'custom_design' => '3',
+                        'page_layout' => '1column',
                         'options_container' => 'container2',
                         'custom_layout_update' => '',
                         'custom_design_from' => '2021-02-19 00:00:00',