@aws-cdk/aws-appsync: missing IntrospectionConfig property

[grant-d]

Describe the bug

I am creating an Appsync API, and want to disable query introspection. This is useful for trimming the security surface-area of (any, but in this case, Appsync) GraphQL api.
(We can debate the pros/cons of doing this, but since the service exposes the switch in the UI, let's assume there's good reason for it)

Said property is in the UI (see screenshot below) and also surfaced in the AWS SDK
However, it is not available in CF or CDK, so I need to use an explicit property override to set it via the CDK.
Additionally, I had to figure this out via trial and error - there is no help that I could find online.

    import * as appsync from '@aws-cdk/aws-appsync-alpha' // 2.54.0-alpha.0
    import * as aps from 'aws-cdk-lib/aws-appsync' // 2.114.1

    const api = new appsync.GraphqlApi(this, 'Api', {...})
    const cfnApi = api.node.defaultChild as aps.CfnGraphQLApi
    cfnApi.addPropertyOverride('IntrospectionConfig', 'DISABLED') // <-- Hackery

Expected Behavior

The L1 or L2 constructs should expose said property directly

Current Behavior

Need to use a property override to set the property. This does have the desired effect, ie the UI changes accordingly

Reproduction Steps

Code shown above

Possible Solution

Expose said property

Additional Information/Context

Perhaps this is actually a CloudFormation bug, not specifically CDK

CDK CLI Version

2.110.0 (build c6471f2)

Framework Version

cdk/lib = 2.114.1, @aws-cdk/aws-appsync-alpha = 2.54.0-alpha.0

Node.js Version

v18.18.2

OS

Mac, 14.2 (23C64)

Language

TypeScript

Language Version

5.3.3

Other information

No response

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