As Malia Obama makes strides in her Hollywood career, she’s decided to take on a new name. The writer and producer, who is also the eldest daughter of Barack and Michelle Obama, will now go by her middle name: Malia Ann, perhaps in an effort to distance herself from her powerful parents’ fame. The change was revealed in the Sundance Institute’s “Meet the Artist” spotlight video, which introduced her as a filmmaker. She described her film project “The Heart” as “an odd little story, somewhat of a fable, about a man grieving the death of his mother after she leaves him an unusual request in her …