No, because the UK recognises it as Ukrainian territorial waters; so of course they are exercising the right of innocent passage through Ukrainian territory. FONOPS is always about the high seas; usually where somebody has tried to claim part of it as either internal waters or territorial sea, or is moving in that direction. And it’s not just about the SCS; the USN in particular does them across the globe where it believes UNCLOS rules (to which the US is, ironically, not a party officially) are being breached.