SlideMenu does not correctly accept className prop

[matthewmartinspok]

I'm submitting a ... (check one with "x")

[ x ] bug report
[ ] feature request
[ ] support request => Please do not submit support request here, instead see https://forum.primefaces.org/viewforum.php?f=57

Codesandbox Case (Bug Reports)
Please fork the codesandbox below and create a case demonstrating your bug report. Issues without a codesandbox have much less possibility to be reviewed.

https://codesandbox.io/s/primereact-test-forked-ynvtr

Current behavior
Class name is not passed through to the component.

Expected behavior
Class name should be passed through to the component.

Minimal reproduction of the problem with instructions
Have it set up in the codesandbox linked above.

Please tell us about your environment:
Windows, VSCode, Chrome

• React version:
  ^17.0.1, ^16.8.0

• PrimeReact version:
  ^6.2.1

• Browser:
  Edge 89.0.774.57
  Firefox 86.0.1
  Chrome 89.0.4389.90

• Language: [all]