Any type of violence in a movie or on stage is choreographed to avoid the chance for injury to the actors. That means that any slap, punch, or fistfight is choreographed. Any use of a weapon is choreographed whether it’s a knife, a gun, or a sword. All falls are choreographed.
Yes, the swordfight in “The Three Musketeers” is choreographed.
I have been in many plays. Even the simplest slap is choreographed. A simple fall is choreographed. An incomplete fall is choreographed. Safety is the #1 priority on any stage or set.