fix: draft a whole round wall from one pick (#547) (#603)

Draft extends the picked faces to every face on the same surface, so one pick on a cylinder's side (stored as two halves) drafts the whole round wall into a frustum. Un-ignores the #547 regression test and adds a kernel test for a round hole. Fixes #547.

Co-authored-by: jonaswre <jonas.wrede@beyondit.gmbh>

crates/engine/src/tests.rs

@@ -2955,7 +2955,6 @@ fn feature_replies_list_only_the_bodies_they_created() {
 /// Drafting a cylinder's side face 5° from the base plane makes a cone frustum (#547): radius 10
 /// at the base, 10 − 20 · tan 5° at the top.
 #[test]
-#[ignore = "fails until #547 is fixed"]
 fn draft_on_a_cylinder_side_makes_a_frustum() {
     let mut s = Session::default();
     run(&mut s, "solid.cylinder", json!({"radius": 10, "height": 20}));