“Welcome to Hollywood, the land of dreams. What’s your dream?,” the well-known quote goes in “Pretty Woman.” It’s arduous not to think about this hopeful second throughout Lisa Azuelos’ amiable but unambitious and tonally shaky Tinseltown-set romantic comedy “I Love America.” Performed by the alluring Sophie Marceau, a stand-in muse for Azuelos, Parisian movie director…
