fix(ios): fix blurhash view empty on new arch bridgeless

[hannojg]

On iOS I had the issue that a view would not show the blur hash.
The problem is that on new arch this component is rendered through the legacy interop layer which

1. Doesn't set the frame on init
2. Doesn't call reactSetFrame

I fixed this by updating the blurhash's frame on layoutSubviews

Reproduction:

export default function App() {
  return (
    <Blurhash blurhash="LGFFaXYk^6#M@-5c,1J5@[or[Q6." style={{ flex: 1 }} />
  );
}

Before	After

[anultravioletaurora]

Thank you for this!!

I had been wondering why this wasn't working for me 😅