fix: enzyme testing replaced by react tester

[jciasenza]

Replaced enzyme display dropdown on toggling dropdown test in Main file for react-renderer tests.

I made PR of this issue #35245

And Testing OK

If something needs to be modified, let me know, thank you!!!
Atte
Juan Carlos (Aulasneo)

Developer Checklist

Test suites passing
Documentation and test plan updated, if applicable
Received code-owner approving review

[openedx-webhooks]

Thanks for the pull request, @jciasenza!

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