Expect compositions in the scene view's visibility list (#417)

CI task 668 failed in e2e 46. A composition placed in a scene has its
own symbol and name since 0334d25, so the eye in the scene header
lists it as a placeable type. The check still expected the list from
before.

- 46-topbar: composition joins the expected types, between collider
  and container.

Tests:
- e2e 46 on melektaus-atx: ALL PASSED, 24 checks

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tools/e2e/46-topbar.mjs

@@ -312,6 +312,7 @@ export async function topbar(t) {
         'camera',
         'clip',
         'collider',
+        'composition',
         'container',
         'joint',
         'particles',