That's why it likely was a real helicopter. This is a pretty low-powered explosion, designed to just disable the helicopter. Here's a video of it on a real helicopter: https://xcancel.com/LucasGimne79974/status/2029851274955431963#m

Same lack of rotor movement.

And here's a screenshot of the video of the explosion, clearly showing smoke going underneath the rotors:

I don't think Iran has the tech to make paint float in the air ánd survive an explosion.