#AlecBaldwin, the actor, will stand trial this week on a charge of involuntary manslaughter for the accidental shooting of “Rust” cinematographer #HalynaHutchins. Alec Baldwin, the producer, will not. Judge Mary Marlowe Sommer of the First Judicial District in New Mexico ruled Monday that prosecutors could not argue that Mr. Baldwin’s role as a coproducer — in addition to being its leading man — made him more culpable for the death of Ms. Hutchins.