Doc generation ignores that some packages don't exist in other languages

### Describe the issue

I keep encountering random TypeScript code in CDK Python documentation. Is that because [jsii](https://github.com/aws/jsii) fails to translate the original code? It happens very often that I reference the official documentation and I find CDK construct arguments or Python libraries that don't exist.

One example is visible in the link provided in this issue, where the following line is used multiple times:

`from child_process import exec_sync`

The problem is that there is no `child_process` library in Python. I think the equivalent code would be:

`from subprocess import run`

### Links

docs.aws.amazon.com/cdk/api/v2/python/aws_cdk.aws_lambda_python_alpha/README.html

Start with the generated Python documentation at docs.aws.amazon.com/cdk/api/v2/python/aws_cdk.aws_lambda_python_alpha/README.html and compare its examples with the source documentation and jsii translation behavior. Done means cross-language documentation no longer includes imports or construct arguments that are unavailable in the target language.

Written by the indexing model from the issue text.