feat(dart): explicitly set empty Uri as baseUri

Author: techouse

clients/algoliasearch-client-dart/packages/chopper_requester/lib/src/chopper_requester.dart

@@ -80,7 +80,7 @@ class ChopperRequester implements Requester {
     final Request chopperRequest = Request(
       request.method,
       requestUri(request),
-      _client.baseUrl,
+      Uri(),
       body: request.body,
       headers: {
         for (final MapEntry<String, dynamic> entry