Run Thrust tests using symbols from `cuda::` instead of `thrust::` namespace

As part of CCCL namespace unification, we want to ensure that existing `thrust::` symbols can be trivially find/replaced with `cuda::` symbols.

To guarantee that this works, we should just rerun Thrust tests using `cuda::` symbols instead of `thrust::` symbols.

- [ ] MVP port `cuda::counting_iterator` iterator type to run through all existing Thrust tests that current use `thrust::counting_iterator`