Fix Menu bug on RTM driver

Author: mpociot

src/SlackRTMDriver.php

@@ -133,6 +133,10 @@ private function convertQuestion(Question $question)
         $questionData = $question->toArray();
 
         $buttons = Collection::make($question->getButtons())->map(function ($button) {
+            if ($button['type'] === 'select') {
+                return $button;
+            }
+
             return array_merge([
                 'name' => $button['name'],
                 'text' => $button['text'],