Unable to remove LifecycleRule from GCS Resources again #595

Checklist

• I did not find a related open issue.
• I did not find a solution in the troubleshooting guide: (https://cloud.google.com/config-connector/docs/troubleshooting)
• If this issue is time-sensitive, I have submitted a corresponding issue with GCP support.

Bug Description

Per #554 we have been setting lifecycleRule to an empty list to remove lifecycle rules (and actually on all buckets with no lifecycle policy defined), which worked on config connector version 1.60.0. However, we recently noticed (on config connector version 1.69.0) that config connector fails with that configuration with "StorageBucket: cannot interpret non-list as list". In #554 it looks like kishorv06 had the same issue on config connector version 1.63.0

Additional Diagnostic Information

Kubernetes Cluster Version

Client Version: 1.20.8-dispatcher
Server Version: 1.20.10-gke.1600

Config Connector Version

1.69.0

Config Connector Mode

namespaced

Log Output

StorageBucket: cannot interpret non-list as list

Steps to Reproduce

Steps to reproduce the issue

Create a storgebucket resource with a lifecycleRule set to an empty list: []