Todd Spangler NY Digital EditorNetflix is celebrating the last two episodes of “Stranger Things 4” with a live, virtual watch party late Thursday night — letting fans tune in for a cast Q&A before the Volume 2 eps go live July 1.For the virtual watch party, Netflix has tapped Scener, a co-viewing platform that lets people watch titles on different streaming services together online. The event is free to access, but you must be a current Netflix subscriber to watch the premiere.Ahead of the two “Stranger Things 4” Volume 2 epsiodes’ premiere at 3 a.m. ET Friday on Netflix, the Scener watch party will host a Q&A starting at 2:15 a.m.