GH-41711: [C++] macros.h: Fix ARROW_FORCE_INLINE for MSVC

[felipecrv]

Rationale for this change

Define the macro correctly. Nothing is broken at the moment because the macro is not used within Arrow at the moment.

What changes are included in this PR?

Correct definition of the macro.

Are these changes tested?

Yes, by having this commit in other PRs that pass CI tests on Windows.

• GitHub Issue: [C++] ARROW_FORCE_INLINE is incorrectly defined for MSVC builds #41711

[github-actions]

⚠️ GitHub issue #41711 has been automatically assigned in GitHub to PR creator.

[kou]

+1

[conbench-apache-arrow]

After merging your PR, Conbench analyzed the 7 benchmarking runs that have been run so far on merge-commit a04339a.

There was 1 benchmark result with an error:

• Commit Run on arm64-m6g-linux-compute at 2024-05-17 21:55:15Z
  • tpch (R) with engine=arrow, format=parquet, language=R, memory_map=False, query_id=TPCH-15, scale_factor=10

There was 1 benchmark result indicating a performance regression:

• Commit Run on ursa-i9-9960x at 2024-05-17 21:48:46Z
  • file-read (R) with compression=uncompressed, dataset=nyctaxi_2010-01, file_type=feather, language=R, output_type=table

The full Conbench report has more details. It also includes information about 1 possible false positive for unstable benchmarks that are known to sometimes produce them.