[FEA]: `cuda.parallel` algorithms should be tested to exercise CUDA graph capture

### 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.parallel (Python)

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

As a user of cuda.parallel, I want to be able to capture them as part of a CUDA graph.

### Describe the solution you'd like

`cuda.parallel` should add new tests that exercise capturing and executing a graph that includes a `cuda.parallel` call.

### Describe alternatives you've considered

_No response_

### Additional context

@leofang do we have the machinery in `cuda.core` or at least `cuda.bindings` to be able to do graph capture from Python yet?