[EuiDataGrid] shows a warning in the test environment

[mbondyra]

Describe the bug Investigate this codesanbox. When running the test, it shows this warning:

The two conditions to reproduce it is to:

1. have this prop passed:

 rowHeightsOptions: {
    defaultHeight: {
      lineCount: 5,
    },
  },

2. (this is weirder) - add a useEffect that only rerenders the parent without changing the props of EuiDataGrid:

  const [, setSth] = useState(() => {})
  useEffect(() => {
    setSth({})
  }, [])

Without these two it cannot be reproduced.