Create cf-template-* buckets with Block All Public Access settings enabled

### Resource Name

_No response_

### Details

The bucket cf-templates-xxxxxx that is automatically created where uploaded local template and generated templates from designer are stored is not enabled with block public access settings by default. Since it is off- it raises security concern.

**Request:**
Can you please create this bucket with block public access settings enabled.

The issue gives no repository file, test, or entry point; start by tracing how the automatically created cf-templates-xxxxxx bucket is provisioned. Confirm the relevant AWS Block All Public Access settings and verify that newly created buckets have them enabled by default.

Written by the indexing model from the issue text.