fix for when list_display_links = None

[bernieke]

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name: Pull request about: Submit a pull request for this project assignees: fabiocaccamo

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Describe your changes Fixes the accordion display mode when list_display_links = None

Related issue Did not create issue

Checklist before requesting a review

• [X] I have performed a self-review of my code.
• [ ] I have added tests for the proposed changes. -> No javascript tests
• [X] I have run the tests and there are not errors. -> Performed manual test