Fix issue on count with Geo constraints and mongo (issue #5285) (#5286)

* Add a tests that fails due to issue #5285

* Make test code much simpler

* Fix #5285 by rewriting query (replacing $nearSphere by $geoWithin)

All credit goes to @dplewis !

* move logic to transform

src/Adapters/Storage/Mongo/MongoStorageAdapter.js

@@ -690,7 +690,7 @@ export class MongoStorageAdapter implements StorageAdapter {
     readPreference = this._parseReadPreference(readPreference);
     return this._adaptiveCollection(className)
       .then(collection =>
-        collection.count(transformWhere(className, query, schema), {
+        collection.count(transformWhere(className, query, schema, true), {
           maxTimeMS: this._maxTimeMS,
           readPreference,
         })