Fix geo GraphQL schema mismatch: camelCase → snake_case

All geo .graphql operations and consuming code updated to match
server schema which uses snake_case field/argument names.
Removed non-existent QuoteCalculations query, using NearestOffers instead.

graphql/operations/public/geo/GetClusteredNodes.graphql

@@ -6,27 +6,21 @@ query GetClusteredNodes(
   $zoom: Int!
   $transportType: String
   $nodeType: String
-  $productUuid: String
-  $hubUuid: String
-  $supplierUuid: String
 ) {
-  clusteredNodes(
+  clustered_nodes(
     west: $west
     south: $south
     east: $east
     north: $north
     zoom: $zoom
-    transportType: $transportType
-    nodeType: $nodeType
-    productUuid: $productUuid
-    hubUuid: $hubUuid
-    supplierUuid: $supplierUuid
+    transport_type: $transportType
+    node_type: $nodeType
   ) {
     id
     latitude
     longitude
     count
-    expansionZoom
+    expansion_zoom
     name
   }
 }