WrapperFieldInputs

Input shape passed to a wrapper component via the fieldInputs input.

Carries the wrapped field's mapper outputs plus an optional field read-only view. Wrappers reached through a container path (which has no FieldTree of its own) receive fieldInputs === undefined, so any wrapper that reads fieldInputs.field must guard for it.

Mappers must emit new rawInputs objects per tick rather than mutating the previous one — this bag is a shallow spread, so mutations to shared nested values leak to downstream wrappers.