And what about the person's right to continue without being obstructed?
It's a standoff. She's literally just standing there. She doesn't move out of her way to let the robot pass - but neither does the robot move to let her pass!
So why should she be the only one arrested and incarcerated? Why not arrest the robot for the same crime?
Sidewalks are for humans to walk on, not dedicated travel corridors for commercial robots. If those robots can't play nice and yield to pedestrians, then they don't belong on the sidewalk.
Because the robot is operating normally and not particularly trying to obstruct her or any other person; whereas she is deliberately interfering with the robot because she has a political grievance against delivery robots and thinks it is good to interfere with their normal operation. The law should absolutely make a distinction between those two things when regulating what sorts of physical movement on the public street constitute a crime.
You don't have that right! All sorts of things can obstruct your walk.