Marc Malkin Senior Film Awards, Events & Lifestyle EditorSandra Lee is getting into the Christmas spirit.The Emmy-winning lifestyle expert has signed a deal to host broadcast and digital segments for Lifetime during the network’s holiday programming, titled “It’s a Wonderful Lifetime.”The pieces will cover a range of holiday subjects, including decorating, baking and gift giving.“For decades, Sandra has helped time-starved homemakers everywhere make delicious meals, give thoughtful gifts, and