Return all documents on re-render

When compiling a single document out of a large set we need to make
sure the documents are returned, the root entry is already set. Menu
changes are not supported for now.

Author: jaapio

packages/guides/src/Compiler/Passes/GlobalMenuPass.php

@@ -70,7 +70,7 @@ public function run(array $documents, CompilerContextInterface $compilerContext)
         }
 
         if ($rootDocument === null) {
-            return [];
+            return $documents;
         }
 
         $menuNodes = [];