… working (#27732)

Closes #19532 

Lambda integrations for `$connect` and `$disconnect` routes were previously broken. Users would see this error message in the Lambda console:

![160185676-15ba5704-a7ba-49ef-b457-bb3f89094de6](https://github.com/aws/aws-cdk/assets/35242245/0938239a-b4f1-440d-9868-86ce3d213386)

Fixing the path by removing the extra `*/` from the [code of the Lambda integration](https://github.com/aws/aws-cdk/blob/main/packages/%40aws-cdk/aws-apigatewayv2-integrations-alpha/lib/websocket/lambda.ts#L36) that adds permission, we no longer see that error message in the Lambda console as the path is now correct:

<img width="973" alt="Screenshot 2023-10-27 at 2 58 11 PM" src="https://github.com/aws/aws-cdk/assets/35242245/c5a8f1f6-4e51-4533-880e-3c5f400cc59e">

I could not manage to figure out how to verify this change via an Integration test assertion. However, I added a new integration test file for Lambda `$connect` and `$disconnect` integrations on a `WebSocketApi`. The attached screenshots above also verify that this change works when I manually run it locally.

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*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*