[tree-view] Tentative fix tests

[JCQuintas]

Tries to fix this issue which has been happening like, twice a week for me.

https://app.circleci.com/pipelines/github/mui/mui-x/112307/workflows/a1f77f9c-b304-4930-9ef3-d10a75e441a5/jobs/696449

I couldn't replicate the fail locally, so this is a tentative fix 😅

[mui-bot]

Deploy preview: https://deploy-preview-20573--material-ui-x.netlify.app/

Bundle size report

Bundle	Parsed size	Gzip size
@mui/x-data-grid	0B(0.00%)	0B(0.00%)
@mui/x-data-grid-pro	0B(0.00%)	0B(0.00%)
@mui/x-data-grid-premium	0B(0.00%)	0B(0.00%)
@mui/x-charts	0B(0.00%)	0B(0.00%)
@mui/x-charts-pro	0B(0.00%)	0B(0.00%)
@mui/x-charts-premium	0B(0.00%)	0B(0.00%)
@mui/x-date-pickers	0B(0.00%)	0B(0.00%)
@mui/x-date-pickers-pro	0B(0.00%)	0B(0.00%)
@mui/x-tree-view	0B(0.00%)	0B(0.00%)
@mui/x-tree-view-pro	0B(0.00%)	0B(0.00%)

Details of bundle changes

Generated by :no_entry_sign: dangerJS against b8f0785140384d8396f5530247116c7ed1c119d9