NEW YORK—After a nearly monthlong social media break, Hilaria Baldwin announced Tuesday on Instagram that she’s expecting her seventh child with husband Alec. Hilaria said she’s due this fall, posting a video of the couple breaking the news to their brood. Alec Baldwin quickly reposted her reveal. “After many ups and downs over the past few years, we have an exciting up and a huge surprise: another Baldwinito is coming this fall,” she wrote, adding a yellow heart emoji. “We were pretty sure our family was complete, and we’re beyond happy with this surprise.” Alec is also the father of a 25-year-old daughter, Ireland Baldwin, with his first wife, Kim Basinger. On Oct. 21 last year, Alec Baldwin was involved in the fatal shooting of cinematographer Halyna Hutchins on the New Mexico set of the Western film “Rust.” Her family is suing him and the movie’s other producers, alleging their …