docs(ec2): clarify default network ACL rule 100 - #37885
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Issue
Closes #13220.
Reason for this change
AWS creates a default network ACL for every VPC and includes AWS-managed allow-all rule 100 entries. CDK exposes the default ACL ID but CloudFormation cannot remove or replace those default entries, so users need a custom NetworkAcl associated with selected subnets when they want deny-by-default behavior.
Description of changes
Vpc.vpcDefaultNetworkAcl.Subnet.networkAclthat the default ACL includes rule 100 and CloudFormation cannot delete it.NetworkAclassociation as the workaround.Validation
git diff --check