fix: migrate geo GraphQL queries and frontend to camelCase

Geo backend was migrated to camelCase but frontend .graphql files and
component code still used snake_case, causing 400 errors on all geo API calls.

graphql/operations/public/geo/NearestSuppliers.graphql

@@ -1,5 +1,5 @@
 query NearestSuppliers($lat: Float!, $lon: Float!, $radius: Float, $productUuid: String, $limit: Int) {
-  nearest_suppliers(lat: $lat, lon: $lon, radius: $radius, product_uuid: $productUuid, limit: $limit) {
+  nearestSuppliers(lat: $lat, lon: $lon, radius: $radius, productUuid: $productUuid, limit: $limit) {
     uuid
   }
 }