GH-35539: [C++] Remove use of internal header files from public header file

[ildipo]

What changes are included in this PR?

Remove use of compute/util_internal.h in compute/key_map.h

• Closes: [C++] Arrow 12.0.0-1 cpp exposes internal headers #35539

[github-actions]

• Closes: [C++] Arrow 12.0.0-1 cpp exposes internal headers #35539

[github-actions]

⚠️ GitHub issue #35539 has been automatically assigned in GitHub to PR creator.

[github-actions]

⚠️ GitHub issue #35539 has no components, please add labels for components.

[pitrou]

Thanks @ildipo . I also removed use of arrow/util/logging.h which should be avoided in public headers.

[github-actions]

⚠️ GitHub issue #35539 has no components, please add labels for components.

[ursabot]

Benchmark runs are scheduled for baseline = af38263 and contender = 505a2e4. 505a2e4 is a master commit associated with this PR. Results will be available as each benchmark for each run completes.
Conbench compare runs links:
[Finished ⬇️0.0% ⬆️0.0%] ec2-t3-xlarge-us-east-2
[Finished ⬇️1.1% ⬆️0.12%] test-mac-arm
[Finished ⬇️1.02% ⬆️0.0%] ursa-i9-9960x
[Finished ⬇️0.45% ⬆️0.03%] ursa-thinkcentre-m75q
Buildkite builds:
[Finished] 505a2e45 ec2-t3-xlarge-us-east-2
[Finished] 505a2e45 test-mac-arm
[Finished] 505a2e45 ursa-i9-9960x
[Finished] 505a2e45 ursa-thinkcentre-m75q
[Finished] af382630 ec2-t3-xlarge-us-east-2
[Finished] af382630 test-mac-arm
[Finished] af382630 ursa-i9-9960x
[Finished] af382630 ursa-thinkcentre-m75q
Supported benchmarks:
ec2-t3-xlarge-us-east-2: Supported benchmark langs: Python, R. Runs only benchmarks with cloud = True
test-mac-arm: Supported benchmark langs: C++, Python, R
ursa-i9-9960x: Supported benchmark langs: Python, R, JavaScript
ursa-thinkcentre-m75q: Supported benchmark langs: C++, Java

[ursabot]

['Python', 'R'] benchmarks have high level of regressions.
ursa-i9-9960x