awswafv2: SingleHeaderProperty in GO generates bad CF template (capitalized "Name" property)

### Describe the bug

The use of SingleHeaderProperty in GO CDK for waf header validatrion is synthesizing a nonvalid template.

this is the code used:

```
....rest of rule config...
SearchString: aws.String(props.HeaderValue),

FieldToMatch: &awswafv2.CfnWebACL_FieldToMatchProperty{

SingleHeader: &awswafv2.CfnWebACL_SingleHeaderProperty{

Name: aws.String(props.HeaderName),

},

},
....rest of rule config...
```

This is the generated template portion
"FieldToMatch": { "SingleHeader": { "name": "issued" } },

and this is the error in deployment.
#/Rules/3/Statement/NotStatement/Statement/ByteMatchStatement/FieldToMatch/SingleHeader: required key [Name] not found
#/Rules/3/Statement/NotStatement/Statement/ByteMatchStatement/FieldToMatch/SingleHeader: extraneous key [name] is not permitted

### Expected Behavior

synthesize a template with capitalized property
"FieldToMatch": { "SingleHeader": { "**N**ame": "issued" }

### Current Behavior

This is the generated template portion
"FieldToMatch": { "SingleHeader": { "name": "issued" } },

### Reproduction Steps

create a waf with a rule that validates the header using ByteMathStament:

```
webaclbug := awswafv2.NewCfnWebACL(scope, aws.String("BUGACL"), &awswafv2.CfnWebACLProps{
Name: aws.String("WebACLBUG"),
DefaultAction: awswafv2.CfnWebACL_DefaultActionProperty{
Allow: awswafv2.CfnWebACL_AllowActionProperty{},
},
Scope: aws.String("REGIONAL"),
Rules: []*awswafv2.CfnWebACL_RuleProperty{
{
Name: aws.String("HeaderValidation"),
Statement: &awswafv2.CfnWebACL_StatementProperty{
NotStatement: &awswafv2.CfnWebACL_NotStatementProperty{
Statement: &awswafv2.CfnWebACL_StatementProperty{
ByteMatchStatement: &awswafv2.CfnWebACL_ByteMatchStatementProperty{
SearchString: aws.String("value"),
FieldToMatch: &awswafv2.CfnWebACL_FieldToMatchProperty{
SingleHeader: &awswafv2.CfnWebACL_SingleHeaderProperty{
Name: aws.String("header"),
},
},
TextTransformations: []*awswafv2.CfnWebACL_TextTransformationProperty{
{
Priority: aws.Float64(0),
Type: aws.String("NONE"),
},
},
PositionalConstraint: aws.String("EXACTLY"),
},
},
},
},
Action: aws.String("COUNT"),
Priority: aws.Float64(1),
VisibilityConfig: awswafv2.CfnWebACL_VisibilityConfigProperty{
SampledRequestsEnabled: aws.Bool(true),
CloudWatchMetricsEnabled: aws.Bool(true),
MetricName: aws.String("HeaderParamsCbRuleMetric"),
},
},
},
VisibilityConfig: awswafv2.CfnWebACL_VisibilityConfigProperty{
SampledRequestsEnabled: aws.Bool(true),
CloudWatchMetricsEnabled: aws.Bool(true),
MetricName: aws.String("WebACLMetric"),
},
})
```
### Possible Solution

_No response_

### Additional Information/Context

_No response_

### CDK CLI Version

2.110.0

### Framework Version

_No response_

### Node.js Version

18.14.0

### OS

windows 10

### Language

Go

### Language Version

_No response_

### Other information

https://github.com/aws/aws-cdk/discussions/27537
https://github.com/aws/aws-cdk/issues/23709

Start by running the provided Go CDK reproduction with CDK CLI 2.110.0 and inspect the synthesized CloudFormation template for CfnWebACL_SingleHeaderProperty. Compare the generated `name` key with AWS WAF's required `Name` key; done means synthesis produces the capitalized property and the resulting template passes deployment validation.

Written by the indexing model from the issue text.