A reader whose OS asks for reduced motion (prefers-reduced-motion: reduce) still got flying and easing
maps: callers passed { duration: 0 } themselves, and flyToCoords took no options argument, so theirs was
silently dropped. useMapFly now routes every camera move (flyTo, easeTo, fitBounds: 12 call sites)
through one guard: jumpTo, or fitBounds with animate:false, under reduced motion. flyToCoords takes and
honours caller options. check:map-fly-reduced-motion runs the real composable against a recording map,
headless: 7/7 PASS here; 5 of them FAIL on the previous code.
