swift

431cc437 - [AutoDiff] Rename "associated function" to "derivative function". (#27603)

[AutoDiff] Rename "associated function" to "derivative function". (#27603) `assocFn` -> `derivativeFn` `AssocFn` -> `DerivativeFn` `assocFunc` -> `derivativeFunc` `AssocFunc` -> `DerivativeFunc` `associatedFunction` -> `derivativeFunction` `AssociatedFunction` -> `DerivativeFunction` `autodiff associated function` -> `derivative function` `autodiff-associated function` -> `derivative function` `AD associated function` -> `derivative function` `associated differentiation function` -> `derivative function` This is a follow-up to #27597. Resolves [TF-882](https://bugs.swift.org/browse/TF-882).