Wednesday Addams would be proud. Eldiara Doucette, aka TikTok’s “Bionic Barbie,” put on a goth-tastic memorial service for the limb that she lost to cancer. The brave stunt, viewed nearly 30 millions times, inspired one commenter to quip: “This is so Addams Family and I love it so damn much.” Doucette, 22, was diagnosed with…