[FEA]: Prepare `cuda.compute` to HostJIT transition

### Is this a duplicate?

- [x] I confirmed there appear to be no [duplicate issues](https://github.com/NVIDIA/cccl/issues) for this request and that I agree to the [Code of Conduct](CODE_OF_CONDUCT.md)

### Area

cuda.compute (Python)

### Is your feature request related to a problem? Please describe.

Currently, `c.parallel.v2` is only used in tests. We should transition to it in production.

### Describe the solution you'd like

As the first step, we should identify steps to productization of `c.parallel.v2`.

This issue can be closed when PyPI `cuda.compute` package is using `c.parallel.v2`.

### Describe alternatives you've considered

_No response_

### Additional context

_No response_