GH-43175: [C++] Skip not Emscripten ready tests in CSV tests

[kou]

Rationale for this change

We can't use thread nor %z on Emacripten. Some CSV tests use them.

What changes are included in this PR?

Skip CSV tests that use thread or %z.

Are these changes tested?

Yes.

Are there any user-facing changes?

No.

• GitHub Issue: [CI][C++] test-ubuntu-22.04-cpp-emscripten fails on CSV tests #43175

[kou]

@github-actions crossbow submit -g cpp

[github-actions]

⚠️ GitHub issue #43175 has been automatically assigned in GitHub to PR creator.

[github-actions]

Revision: d54502a

Submitted crossbow builds: ursacomputing/crossbow @ actions-58288f5ac1

Task	Status
test-alpine-linux-cpp
test-build-cpp-fuzz
test-conda-cpp
test-conda-cpp-valgrind
test-cuda-cpp
test-debian-12-cpp-amd64
test-debian-12-cpp-i386
test-fedora-39-cpp
test-ubuntu-20.04-cpp
test-ubuntu-20.04-cpp-bundled
test-ubuntu-20.04-cpp-minimal-with-formats
test-ubuntu-20.04-cpp-thread-sanitizer
test-ubuntu-22.04-cpp
test-ubuntu-22.04-cpp-20
test-ubuntu-22.04-cpp-emscripten
test-ubuntu-22.04-cpp-no-threading
test-ubuntu-24.04-cpp
test-ubuntu-24.04-cpp-gcc-13-bundled
test-ubuntu-24.04-cpp-gcc-14

[kou]

+1

[conbench-apache-arrow]

After merging your PR, Conbench analyzed the 4 benchmarking runs that have been run so far on merge-commit 49be60f.

There were no benchmark performance regressions. 🎉

The full Conbench report has more details.