B2B-1967: [AWS Aurora] [MFTF]: Investigate CE Build Test Failures

 - Fixing flaky tests

Author: dhaecker

app/code/Magento/PageBuilder/Test/Mftf/Test/AdminPageBuilderBannerPosterAppearanceTest/BannerPosterCanInlineEditContentWhenIn25PercentWidthColumnTest.xml

@@ -73,6 +73,7 @@
             <argument name="contentType" value="PageBuilderBannerContentType"/>
             <argument name="content" value="{{PageBuilderBannerMessageProperty.value}}"/>
         </actionGroup>
+        <waitForElement selector="{{BannerOnBackend.messageContent('1', PageBuilderBannerMessageProperty.value)}}" stepKey="seeMessageContentStageAfterEdit"/>
         <!-- Validate Edit Panel -->
         <comment userInput="Validate Edit Panel" stepKey="commentValidateEditPanel"/>
         <actionGroup ref="openPageBuilderEditPanel" stepKey="openEditMenuOnStage">

app/code/Magento/PageBuilder/Test/Mftf/Test/AdminPageBuilderSlideItemAppearancePosterTest/SlideItemPosterCanInlineEditContentWhenIn25PercentWidthColumnTest.xml

@@ -82,6 +82,7 @@
             <argument name="contentType" value="PageBuilderSlideContentType"/>
             <argument name="content" value="{{PageBuilderSlideItemContent_Slide1.value}}"/>
         </actionGroup>
+        <waitForElement selector="{{SlideOnBackend.messageContent('1', PageBuilderSlideItemContent_Slide1.value)}}" stepKey="seeMessageContentStageAfterEdit"/>
         <!-- Validate Edit Panel -->
         <comment userInput="Validate Edit Panel" stepKey="commentValidateEditPanel"/>
         <actionGroup ref="openPageBuilderEditPanelSmallByIndex" stepKey="openEditMenuOnStage">