CFG Scale == Mimic Scale deactivates all processing

[heftig]

For the Comfy node as used in SwarmUI, setting the cfg_scale == mimic_scale apparently deactivates the node completely, no matter what the other settings are.

However, I think the node should only by bypassed when

  (interpolate_phi == 0.0) ||
  (variability_measure == "AD" && threshold_percentile == 0.0) ||
  (cfg_mode == "Constant" && mimic_mode == "Constant" && cfg_scale == mimic_scale) ||
  (cfg_scale == mimic_scale && cfg_scale_min == mimic_scale_min)

or just remove this optimization completely.

This would retain the ability to vary the scales over time, even if the endpoints are equal.