AC-9141: Functional test stability fix

Author: nishant04412

app/code/Magento/Catalog/Test/Mftf/Test/StorefrontProductsCompareWithEmptyAttributeTest.xml

@@ -47,7 +47,7 @@
         <dragAndDrop selector1="{{UnassignedAttributes.ProductAttributeName('$$createProductAttribute.attribute_code$$')}}" selector2="{{Group.FolderName('Product Details')}}" stepKey="moveProductAttributeToGroup"/>
         <click selector="{{AttributeSetSection.Save}}" stepKey="saveAttributeSet"/>
         <waitForLoadingMaskToDisappear stepKey="waitForLoadingMaskToDisappear" />
-        <seeElement selector=".message-success" stepKey="assertSuccess"/>
+        <waitForElementVisible selector=".message-success" stepKey="assertSuccess"/>
         <actionGroup ref="ClearCacheActionGroup" stepKey="clearCache"/>
         <amOnPage url="{{StorefrontProductPage.NavigationCategoryByName($$createCategory.custom_attributes[url_key]$$)}}" stepKey="goProductPageOnStorefront1"/>
         <!-- View Simple Product 1 -->