fix(019_11): make the polygon fixtures simple (non-self-intersecting)
Three polygons in the 019_11 geo-query family are self-intersecting and get rejected (400) by any broker whose storage validates rings (Mongo 2dsphere/S2), cascading all 8 sub-tests via suite-setup failure:
- building-location-polygon.jsonld: vertices A(13.2865906,52.5648645) and B(13.2879639,52.5648645) share a latitude with A west of B, so the closing edge E->A must cross the hanging B->C edge near A. Swapping the order of the first two vertices (ring B,A,C,D,E,B) makes the ring simple. Verified planar: still contains the 019_11_03 query polygon, still disjoint from the _04/_05 and _02/_07 query shapes, still not within the _06 polygon, and does not contain the _08 point - every EXPECTED_COUNT in the family is preserved.
- 019_11_01 equals-query updated to the new ring verbatim.
- 019_11_03 contains-query: drop the duplicated consecutive first vertex (also made the ring non-simple).
- 019_11_06 within-query: drop the near-duplicate second vertex (13.3027267,52.4905156), 0.0004 deg from its neighbour - same authoring accident, same bowtie. Second entity (triangle) remains within; first remains not-within.
Doubts #12 (closed) / #34 (closed) / #56 (closed).