Which issue(s) does this change fix?

#6756

Why is this change necessary?

To prevent unlikely error from os.listdir(os.getcwd()) to break telemetry

How does it address the issue?

In _relevant_cdk_files_are_present, catch the FileNotFoundError and return False

What side effects does this change have?

No

Mandatory Checklist

PRs will only be reviewed after checklist is complete

• Add input/output type hints to new functions/methods
• Write design document if needed (Do I need to write a design document?)
• Write/update unit tests
• Write/update integration tests
• Write/update functional tests if needed
• make pr passes
• make update-reproducible-reqs if dependencies were changed
• Write documentation

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.