Updates for latest page_manager release 8.x-4.0-rc3

Patch converts $this->routeMatch->getParameter('page_manager_page_variant'); to $this->request->attributes->get('_page_manager_page_variant'); per above

🙏

Thanks for raising this issue drclaw!

While I generally agree with the patch, I'm just a bit confused how you encountered this issue. Looking quickly, I couldn't find anything that's actually broken due to the changes in page manager rc3 and my understanding is that even if $this->routeMatch->getParameter('page_manager_page_variant') (/src/LayoutBuilderIpeService.php?ref_type=heads#L476) fails, the call to $this->getEntity() in /src/LayoutBuilderIpeService.php?ref_type=heads#L488 provides a fallback (which actually looks at the request attributes just as you propose).

So for my own curiosity: Can you describe what is actually broken before this change?

Patch committed. Thanks.

Automatically closed - issue fixed for 2 weeks with no activity.