Fix API 8 test issue

Signed-off-by: Mlađan Mihajlović <32955957+mladjanm@users.noreply.github.com>

Author: mladjanm

packages/openapi-to-graphql/test/example_api8_server.js

@@ -59,7 +59,12 @@ function startServer(PORT) {
   })
 
   app.post('/api/type', (req, res) => {
-    if (req.body?.type?.name && !Types[req.body.type.name]) {
+    if (
+      req.body &&
+      req.body.type &&
+      req.body.type.name &&
+      !Types[req.body.type.name]
+    ) {
       Types[req.body.type.name] = req.body.type
     }