v0.38 ModelPatcher.clone() always passes fast_disk= to the patcher class.
Upstream nunchaku's ZImageModelPatcher.__init__ (development stopped) does
not declare it, so any model.clone() on a nunchaku Z-Image model dies with
TypeError: unexpected keyword argument 'fast_disk' (seen via EasyCache node).
Added apply_nunchaku_zimage_fast_disk_patch(): wraps the subclass __init__
to accept and forward fast_disk, discovered through sys.modules only (never
re-importing, to avoid patching a second module instance under a different
name), idempotent via _ZIMAGE_FAST_DISK_TAG, no-ops when a future build
already declares the parameter, and covered by the existing fuse-patch
retry timer for load-order races.