MAGETWO-87243: Unskip failing MFTF tests for WYSIWYG

Author: kieuphan2406

dev/tests/acceptance/tests/functional/Magento/FunctionalTest/Cms/Test/AdminAddWidgetToWYSIWYGWithCMSPageLinkTypeCest.xml

@@ -44,11 +44,11 @@
         <see selector="{{WidgetSection.InsertWidgetBtnEnabled}}" userInput="Insert Widget" stepKey="seeInsertWidgetEnabled" />
         <selectOption selector="{{WidgetSection.WidgetTemplate}}" userInput="CMS Page Link Block Template" stepKey="selectTemplate" />
         <click selector="{{WidgetSection.BtnChooser}}" stepKey="clickSelectPageBtn" />
-        <!--<waitForLoadingMaskToDisappear stepKey="wait3"/>-->
         <waitForElementVisible selector="{{WidgetSection.CMSPage}}" stepKey="waitForPageVisible" />
         <scrollTo selector="{{WidgetSection.CMSPage}}" stepKey="scrollToCMSName" />
         <click selector="{{WidgetSection.CMSPage}}" stepKey="selectPreCreateCMS" />
         <waitForElementNotVisible selector="{{WidgetSection.SelectPageTitle}}" stepKey="waitForSlideOutCloses" />
+        <wait time="3" stepKey="waitForInsertWidgetClickable"/>
         <click selector="{{WidgetSection.InsertWidget}}" stepKey="clickInsertWidget" />
         <waitForLoadingMaskToDisappear stepKey="waitForLoading" />
         <waitForElementNotVisible selector="{{WidgetSection.InsertWidgetTitle}}" stepKey="waitForSlideoutCloses" />