Ensure authentication URIs appear in error messages.

Author: io7m

palace-books-controller/src/main/java/org/nypl/simplified/books/controller/ProfileAccountLoginTask.kt

@@ -464,6 +464,7 @@ class ProfileAccountLoginTask(
     request: BasicToken
   ): TaskResult<Unit> {
     val authenticationURI = request.description.authenticationURI
+    this.steps.addAttribute("AuthenticationURI", authenticationURI.toString())
 
     val httpRequest = this.http.newRequest(authenticationURI)
       .setAuthorization(