Fix build checkout retry mechanism.

We need to retry on both step failure or step infra failure.

Change-Id: I963f1b23d71f4a9bcd3883373a748fce96cdcac8
Bug: https://github.com/flutter/flutter/issues/58516
Reviewed-on: https://flutter-review.googlesource.com/c/recipes/+/3400
Commit-Queue: Godofredo Contreras <godofredoc@google.com>
Reviewed-by: Tong Wu <wutong@google.com>