fix(breadcrumbsv2): fallback to immutable map if currentImmutableEntity is not defined
Fix to prevent the following error: https://sentry.uncinc.nl/organizations/sentry/issues/55925/?project=58&referrer=project-issue-stream
Fix to prevent the following error: https://sentry.uncinc.nl/organizations/sentry/issues/55925/?project=58&referrer=project-issue-stream