Move zip_iterator to internally use cuda::std::tuple

[miscco]

We want to get rid of the former and passing in a cuda::std::tuple into thrust::make_zip_iterator has surprising results.

[github-actions]

🟩 CI finished in 1h 53m: Pass: 100%/90 | Total: 2d 19h | Avg: 44m 59s | Max: 1h 23m | Hits: 60%/132225

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• 🟩 thrust: Pass: 100%/43 | Total: 1d 03h | Avg: 37m 59s | Max: 1h 19m | Hits: 54%/79625

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• 🟩 python: Pass: 100%/1 | Total: 28m 36s | Avg: 28m 36s | Max: 28m 36s

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👃 Inspect Changes

Modifications in project?

	Project
	CCCL Infrastructure
	libcu++
	CUB
+/-	Thrust
	CUDA Experimental
	python
	CCCL C Parallel Library
	Catch2Helper

Modifications in project or dependencies?

	Project
	CCCL Infrastructure
	libcu++
+/-	CUB
+/-	Thrust
	CUDA Experimental
+/-	python
+/-	CCCL C Parallel Library
+/-	Catch2Helper

🏃‍ Runner counts (total jobs: 90)

#	Runner
65	linux-amd64-cpu16
9	windows-amd64-cpu16
6	linux-amd64-gpu-rtxa6000-latest-1
4	linux-arm64-cpu16
3	linux-amd64-gpu-rtx4090-latest-1
2	linux-amd64-gpu-rtx2080-latest-1
1	linux-amd64-gpu-h100-latest-1