fix region_semantic

[kgonia]

When ssa is used region_semantic don't work properly

self.region_semantic_model.region_semantic(img_src) in image_text_transformation.py

is called without region_classify_model param so it always fallback to 'edit_anything'. It causes error when 'ssa ' was used for initalization. region_semantic method should use same model as in init so param is no needed.