infinite loop in intersection_with_local_plane in some cases

[KnstAnt]

I have infinite loop in intersection_with_local_plane in some cases in this block: https://github.com/dimforge/parry/blob/3a41ac21c5ded2337937cc450d2cbf64a31c9d38/src/query/split/split_trimesh.rs#L584-L600 I think the cheking "if !seen" should be repeated inside the loop:

...
'traversal: while let Some(current) = next {
    if seen[*current] {
        break;
    } 
    seen[*current] = true;
    polyline_indices.push([prev as u32, *current as u32]);
    for neighbor in &index_adjacencies[*current] {
...