REST GET requests are discarding the parameters

[cetetesoft]

The AbstractRestRequest::sendData() method is building the URL for GET requests like so:
$requestUrl = $this->getEndpoint() . '?' . http_build_query($data);
But this URL is used nowhere after this. Instead, the request is using $this->getEndpoint() as the URL.

This:

            $httpResponse = $this->httpClient->request(
                $this->getHttpMethod(),
                $this->getEndpoint(),

Should be replaced with:

            $httpResponse = $this->httpClient->request(
                $this->getHttpMethod(),
                $requestUrl,