TopoMapContributor : topologies are not fetched on the current extent of map

[MohamedHamouGisaia]

How we fetch topology

In Topology mode, supposing we have 500 nodes (bus stations, ...) on the current map extend
and that there are 4 geohash tiles intersecting the map extend.

Our strategy is to call term aggregation (using fetch_geometry) with a size 500, on each geohash tile

Bug

The 500 terms will be fetched on each tile, the entire tile; whereas we have to fetch, on each tile, 500 terms which centroids are within the map extend