swift

9b3b22b6 - Lift derivative registration restriction for protocol requirements.

Lift derivative registration restriction for protocol requirements. This effectively allows us to register single derivative for a multiple original functions: protocol requirement and (possibly) default implementations from extensions. As a result, we might have default derivatives registered for protocol requirements and non-differentiable requirements conditionally differentiable (in an extension). Roll back test changes from #84800 and re-enable SIMD and Tracked<Float> differentiability by providing default derivatives for AdditiveArithmetic and Numeric. Fixes #55611 Fixes #84840