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GH-43507: [C++] Use ViewOrCopyTo instead of CopyTo when pretty printing non-CPU data (#43508)

### Rationale for this change

When ensuring the data we are pretty-printing is on the CPU, we can use `ViewOrCopyTo` instead of `CopyTo`, in case the data can be viewed as CPU data without a copy.

### Are these changes tested?

Yes (I added a test that uses CUDA host memory, which should be a case where it can be viewed and doesn't need to be copied, but of course the test it not actually ensuring we avoid the copy, just that the printing works)

### Are there any user-facing changes?

No
* GitHub Issue: #43507

Authored-by: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Signed-off-by: Sutou Kouhei <kou@clear-code.com>