[AWS::ApiGatewayV2::DomainName] - [Coverage] - DomainNameConfiguration EndpointAccessMode

### Name of the resource

AWS::ApiGatewayV2::DomainName

### Resource name

_No response_

### Description

AWS::ApiGatewayV2::DomainName DomainNameConfiguration supports [SecurityPolicy](https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/aws-properties-apigatewayv2-domainname-domainnameconfiguration.html#cfn-apigatewayv2-domainname-domainnameconfiguration-securitypolicy) however when you use an enhanced security policy (SecurityPolicy_*), you must also specify an endpoint access mode. [source](https://aws.amazon.com/blogs/compute/enhancing-api-security-with-amazon-api-gateway-tls-security-policies/).
The property EndpointAccessMode is not supported.
In contrast AWS::ApiGateway::RestApi has received support for this property.

For PQ compliance the EndpointAccessMode is needed to enable PQ ciphers in the enhanced security policy.

### Other Details

_No response_

Start by reviewing the AWS::ApiGatewayV2::DomainName coverage and comparing it with the existing AWS::ApiGateway::RestApi support for EndpointAccessMode. Read the linked CloudFormation reference and AWS security-policy article to confirm the property behavior. Done means DomainNameConfiguration supports EndpointAccessMode for enhanced security policies and the coverage is represented.

Written by the indexing model from the issue text.