Marc Malkin Senior Film Awards, Events & Lifestyle EditorWelcome to this week’s “Just for Variety.”It sounds like Michelle Obama will appear on the final season of “Black-ish.” After star Anthony Anderson teased the possibility when I caught up with him at the Television Academy’s pre-Emmy party for performer nominees, sources tell me that the former first lady’s appearance isn’t a done deal just yet, but they’re close to finalizing the details any day now.Anthony Anderson teases a possible