fix: use managed login branding provider identifier

Map compatibility id fields to managed_login_branding_id because the native aws_cognito_managed_login_branding resource does not expose a generic id attribute.

Closes #432

Author: lgallard

managed-login-branding.tf

@@ -44,7 +44,7 @@ locals {
   # Create a map of branding configurations for outputs.
   managed_login_branding_map = var.enabled && var.managed_login_branding_enabled ? {
     for k, v in aws_cognito_managed_login_branding.branding : k => {
-      id                        = v.id
+      id                        = v.managed_login_branding_id
       managed_login_branding_id = v.managed_login_branding_id
       client_id                 = v.client_id
       user_pool_id              = v.user_pool_id

outputs.tf

@@ -147,7 +147,7 @@ output "managed_login_branding_details" {
   value = var.enabled && var.managed_login_branding_enabled ? {
     configurations = {
       for k, v in aws_cognito_managed_login_branding.branding : k => {
-        id                        = v.id
+        id                        = v.managed_login_branding_id
         managed_login_branding_id = v.managed_login_branding_id
         client_id                 = v.client_id
         user_pool_id              = v.user_pool_id