Marker clustering changed the map DOM contract the spec relied on:
clustered and off-viewport markers are absent, so raw .map-marker counts
undercount and first-marker clicks can hit-test against the sticky
navbar/banners. Count nodes as individual markers plus cluster badge
totals (new data-testid on the badge), zoom into a cluster before the
label and popup interactions so targets sit mid-map, and assert cluster
clicks spread children into individual markers.