WideBoolF32x4::all() returns false when it should return true.

[bluecube]

Observed on simba 0.9.0, but I think current master will be the same (no changes in the function) M(n)WE: assert!(WideBoolF32x4::splat(true).all());

I think this happens because true converts to Nan and comparison between NaNs always returns false