It is a testament to the quality of this year’s Sundance Film Festival back in January—in the good old pre-lockdown days—that close to a year later, its offerings are still finding outlets for those who weren’t in Park City, Utah. Such is the case for Miranda July’s “Kajillionaire,” a film that is neither comedy nor drama yet teases elements of both such that, when it ends, the filmmaker forces the audience to undergo hard questions about empathy and identity.