[SE-0229] Update status to active review
[SE-0229] Update status to active review

<https://forums.swift.org/t/se-0229-simd-vectors/16518/99>
ddunbar/swift-evolution,apple/swift-evolution,Nirma/swift-evolution,anandabits/swift-evolution,airspeedswift/swift-evolution,rballard/swift-evolution,airspeedswift/swift-evolution,hartbit/swift-evolution,rballard/swift-evolution,abertelrud/swift-evolution,Nirma/swift-evolution,apple/swift-evolution,DevAndArtist/swift-evolution,natecook1000/swift-evolution,hartbit/swift-evolution,ddunbar/swift-evolution,allevato/swift-evolution,anandabits/swift-evolution,DevAndArtist/swift-evolution,abertelrud/swift-evolution,allevato/swift-evolution,natecook1000/swift-evolution