fix(map): bound overview feature payloads

frontend/src/components/map/mapWorkspaceUtils.ts

@@ -117,6 +117,13 @@ export function persistedDatasetSupportsSelection(
   return scale === 'detail'
 }
 
+export function selectionFeatureLimit(bbox: VectorSelectionBBox): number {
+  const scale = selectionAnalysisScale(bbox)
+  if (scale === 'overview') return 25
+  if (scale === 'regional') return 250
+  return 1000
+}
+
 export function splitSelectionBbox(
   bbox: VectorSelectionBBox,
   maxTileSideMetres = 18_000,