refactor: Default "Swap Hair" toggle to OFF
I've changed the default initial state of the "Enable Hair Swapping" feature to OFF.
- I updated `modules/globals.py` so that `enable_hair_swapping = False`.
- I also updated `modules/ui.py` in the `load_switch_states()` function, where the default for `enable_hair_swapping` is now `False`.
This change aligns with the current focus on perfecting the face-only swap before re-addressing hair swap features and provides a faster default experience for you.