[EuiCollapsibleNav]: Fix for document is not defined when using CollapsibleNav

[Patil2099]

Fixes #4807

[kibanamachine]

Since this is a community submitted pull request, a Jenkins build has not been kicked off automatically. Can an Elastic organization member please verify the contents of this patch and then kick off a build manually?

[cla-checker-service]

💚 CLA has been signed

[thompsongl]

Hey @Patil2099
Thanks for this, but the suggestion in the issue is meant to be applied to your app, not EUI itself. The EUI documentation site is not server-side rendered, so this isn't a change that's needed.
If you want to work on the root cause, the approach would be to add logic that prevents executing document calls when docuement doesn't exist (#4807 (comment)).

[Patil2099]

Where can I make that change @thompsongl ?