“The reality changed our plans,” explains Ukrainian writer Anna Melikova of her new screenplay “I Rarely Wake Up Dreaming.” She is seated next to her wife Isabelle Stever, the director of their new film, at the Locarno Film Festival. Their second creative collaboration after the Berlinale premiering “Grand Jeté” (2022), “I Rarely Wake Up Dreaming” marks Stever’s long-awaited return to Locarno after her debut “Gisela” played in the Filmmakers of the Present section back in 2005. For practical reasons, Melikova and Stever originally counted on a limited number of days of shooting in Ukraine. “I Rarely Wake Up Dreaming” also appears inclined to settle for safety.