Unfortunately since the Volumetric Scattering Intensity is grayed out once the light is set to Static, there’s no obvious way other than disabling the static contribution to Volumetric Fog altogether in the Exponential Height Fog.
There’s one thing you could try if you want to rebake. You can force a Static light to bake with a IES profile by setting the light to Stationary, assigning the IES image, and then switch the light back to Static. You could try that with the Volumetric Scattering Intensity and see if that carries over. I’ve never tried that myself, but have wanted to disable fog from certain baked lights in the past.