updater: switch to IdSetDense
updater: switch to IdSetDense

Binary search in IdSetHybrid is too slow for this fairly critial loop with >100 million node checks.
We trade a bit more memory consumption for reduced CPU time.

mmd-osm/Overpass-API,mmd-osm/Overpass-API,mmd-osm/Overpass-API,mmd-osm/Overpass-API