PB-170: TinyMCE Performance is very poor with multiple instances on Stage

- Uncomment group

Author: davemacaulay

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

@@ -723,7 +723,7 @@
             <severity value="MAJOR"/>
             <useCaseId value="MC-1416"/>
             <testCaseId value="MC-3468"/>
-<!--            <group value="pagebuilder"/>-->
+            <group value="pagebuilder"/>
             <group value="pagebuilder-text"/>
         </annotations>
         <before>