AC-252: Refactor core MFTF TinyMCE Section

- update tests after merge

Author: xmav

app/code/Magento/Widget/Test/Mftf/ActionGroup/AdminInsertCatalogNewProductListWidgetForCmsPageContentSectionActionGroup.xml

@@ -19,7 +19,7 @@
             <argument name="template" type="string" defaultValue="New Products Grid Template"/>
             <argument name="cacheLifetime" type="string" defaultValue=""/>
         </arguments>
-        <click selector="{{CmsWYSIWYGSection.InsertWidgetBtn}}" stepKey="clickInsertWidgetButton"/>
+        <click selector="{{TinyMCESection.InsertWidgetBtn}}" stepKey="clickInsertWidgetButton"/>
         <waitForPageLoad stepKey="waitForSlideOut"/>
         <selectOption selector="{{WidgetSection.WidgetType}}" userInput="Catalog New Products List" stepKey="selectWidgetType"/>
         <waitForPageLoad stepKey="waitForWidgetOptions"/>

app/code/Magento/Widget/Test/Mftf/ActionGroup/AdminInsertCatalogProductsListWidgetForCmsPageContentSectionActionGroup.xml

@@ -20,7 +20,7 @@
             <argument name="cacheLifetime" type="string" defaultValue=""/>
             <argument name="categoryName" type="string" defaultValue="{{DefaultCategory.name}}"/>
         </arguments>
-        <click selector="{{CmsWYSIWYGSection.InsertWidgetBtn}}" stepKey="clickInsertWidgetButton"/>
+        <click selector="{{TinyMCESection.InsertWidgetBtn}}" stepKey="clickInsertWidgetButton"/>
         <waitForPageLoad stepKey="waitForSlideOut"/>
         <selectOption selector="{{WidgetSection.WidgetType}}" userInput="Catalog Products List" stepKey="selectWidgetType"/>
         <waitForPageLoad stepKey="waitForWidgetOptions"/>