MC-3847: Issues With Same Width Buttons In Tabs

- Fixing failing test

Author: dhaecker

app/code/Magento/PageBuilder/Test/Mftf/Test/AdminPageBuilderButtonGroupAppearanceTests.xml

@@ -2105,9 +2105,9 @@
         <actionGroup ref="validateButtonItemsSameSize" stepKey="validateButtonsSameSizeStorefront2">
             <argument name="buttonGroupPage" value="ButtonGroupOnStorefront"/>
             <argument name="buttonItemPage" value="ButtonItemOnStorefront"/>
-            <argument name="buttonGroupIndex" value="3"/>
-            <argument name="firstButtonIndex" value="5"/>
-            <argument name="secondButtonIndex" value="6"/>
+            <argument name="buttonGroupIndex" value="2"/>
+            <argument name="firstButtonIndex" value="3"/>
+            <argument name="secondButtonIndex" value="4"/>
         </actionGroup>
     </test>
 </tests>