AC-246: Update MFTF test

Fixed selector for overflow of slider

Author: kieuphan2406

app/code/Magento/PageBuilder/Test/Mftf/Section/PageBuilderSliderSection/SlideOnBackendSection.xml

@@ -29,7 +29,7 @@
         <element name="widgetPlaceholder" type="text" selector="(//div[contains(@class,'pagebuilder-slide')])[{{slideIndex}}]//*[contains(@class, 'magento-placeholder') and contains(@class, 'magento-widget')]" parameterized="true"/>
         <element name="tinymce" type="text" selector="(//div[contains(@class,'pagebuilder-slide')])[{{slideIndex}}]//div[contains(@class, 'inline-wysiwyg')]" parameterized="true"/>
         <element name="tinymceInFocus" type="text" selector="(//div[contains(@class,'pagebuilder-slide')])[{{slideIndex}}]//div[contains(@class, 'inline-wysiwyg') and contains(@class, 'mce-edit-focus')]" parameterized="true"/>
-        <element name="slideOverflowPropertyJS" type="button" selector="return window.getComputedStyle(document.querySelectorAll('[data-content-type=slide] div.tox-tinymce-inline')[{{tinyMCEIndex}}]).overflow" parameterized="true"/>
+        <element name="slideOverflowPropertyJS" type="button" selector="return window.getComputedStyle(document.querySelectorAll('.element-children.content-type-container.slider-container')[{{tinyMCEIndex}}]).overflow" parameterized="true"/>
         <!-- Appearance Configuration -->
         <element name="appearance" type="text" selector="(//div[@data-content-type='slide'])[{{slideIndex}}][@data-appearance='{{appearance}}']" parameterized="true"/>
         <element name="slideName" type="button" selector="(//div[@data-content-type='slide'])[{{slideIndex}}][@data-slide-name='{{slideName}}']" parameterized="true"/>