Fix a bug that caused some globals to be skipped

If the globals were defined by an extension, there was a scenario that caused them to be skipped. Maybe this isn't the right place to fix it, but it does work in my local testing.

src/Sculpin/Bundle/TwigBundle/TwigFormatter.php

@@ -55,6 +55,10 @@ public function formatBlocks(FormatContext $formatContext): array
             $this->massageTemplate($formatContext)
         );
         $data = $formatContext->data()->export();
+
+        // apply twig globals to the context array prior to loading the template
+        $data = $this->twig->mergeGlobals($data);
+
         $template = $this->twig->loadTemplate($formatContext->templateId());
 
         if (!count($blockNames = $this->findAllBlocks($template, $data))) {