fix(gatsby-plugin-layout): log uncaught errors in old browsers (gatsb…

…yjs#9635)

IE11 doesn't show the actual error, just `Error: Uncaugt error thrown` without any stack traces.

There is no way to implement try/catch around this as this module is the first entry point.

Adding an Error Boundary on the Layout component does not work.

packages/gatsby-plugin-layout/src/wrap-page.js

@@ -11,6 +11,9 @@ try {
         `Please create layout component in that location or specify path to layout component in gatsby-config.js`
     )
   } else {
+    // Logging the error for debugging older browsers as there is no way
+    // to wrap the thrown error in a try/catch.
+    console.error(e)
     throw e
   }
 }