GH-38624: [C++] Fix: add TestingEqualOptions for gtest functions.

[Light-City]

Rationale for this change

some other interfaces lack equal options, suck as nan equal, so we add TestingEqualOptions for each function and add some testing.

What changes are included in this PR?

gtest_util related.

Are these changes tested?

gtest_util.cc

Are there any user-facing changes?

yes.

• Closes: [C++] During unit testing, the float array contains nan equality judgment #38624

[github-actions]

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See also:

• Other pull requests
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[github-actions]

⚠️ GitHub issue #38624 has been automatically assigned in GitHub to PR creator.

[Light-City]

@mapleFU @js8544 here, add TestingEqualOptions to fix previous issue

[mapleFU]

General LGTM!

Also cc @bkietz

[bkietz]

LGTM, but please fix the formatting

https://github.com/apache/arrow/actions/runs/6810325442/job/18518414647?pr=38642#step:5:915

[Light-City]

LGTM, but please fix the formatting

https://github.com/apache/arrow/actions/runs/6810325442/job/18518414647?pr=38642#step:5:915

done @bkietz

[conbench-apache-arrow]

After merging your PR, Conbench analyzed the 4 benchmarking runs that have been run so far on merge-commit 0e52d30.

There were no benchmark performance regressions. 🎉

The full Conbench report has more details. It also includes information about 19 possible false positives for unstable benchmarks that are known to sometimes produce them.