Resolves a SyntaxError ('(' was never closed) and associated
IndentationErrors in modules/processors/frame/face_swapper.py.
These errors were caused by malformed and duplicated definitions of
the helper functions _prepare_warped_source_material_and_mask and
_blend_material_onto_frame.
The fix involved:
- Removing the entire erroneous duplicated/malformed function blocks.
- Ensuring that the single, correct definitions for these helper
functions are properly indented at the top level of the module.
This critical fix addresses a major blocker that prevented the
application from starting and parsing the face_swapper.py module.