GH-29839: [C++][Python][R] Rename binary set lookup functions

[faze-geek]

Rationale for this change

The public compute function names is_in_meta_binary and
index_in_meta_binary expose the internal MetaFunction implementation
detail.

What changes are included in this PR?

• Register is_in_binary and index_in_binary as the canonical names.
• Retain is_in_meta_binary and index_in_meta_binary as compatibility
  aliases.
• Update Arrow-owned R callers and C++ benchmarks to use the canonical names.
• Add C++ and Python coverage for both canonical and compatibility names.
• Add the canonical names to the C++ and Python compute documentation.
• Update the PyArrow registry-name test to account for canonical names returned
  through aliases.

Are these changes tested?

Yes.

Are there any user-facing changes?

Closes #29839

• GitHub Issue: [C++] Document and rename is_in_meta_binary #29839

[github-actions]

⚠️ GitHub issue #29839 has been automatically assigned in GitHub to PR creator.

[Copilot]

🟢 Approval recommended

The changes, compatibility aliases, tests, benchmarks, and documentation are covered with no unresolved issues.

Pull request overview

Renames binary set-lookup functions to canonical names while preserving compatibility aliases.

Changes:

• Registers is_in_binary and index_in_binary.
• Updates R callers, benchmarks, tests, and documentation.
• Retains legacy aliases and verifies alias handling.

File summaries

File	Description
r/R/dplyr-funcs-conditional.R	Updates caller documentation.
r/R/compute.R	Uses canonical function names.
python/pyarrow/tests/test_compute.py	Tests canonical and legacy names.
docs/source/python/api/compute.rst	Documents canonical Python APIs.
docs/source/cpp/compute.rst	Documents canonical C++ functions.
cpp/src/arrow/compute/kernels/scalar_set_lookup.cc	Registers canonical functions and aliases.
cpp/src/arrow/compute/kernels/scalar_set_lookup_test.cc	Tests canonical and legacy names.
cpp/src/arrow/compute/kernels/scalar_set_lookup_benchmark.cc	Uses canonical benchmark names.

Review details

• Files reviewed: 8/8 changed files
• Comments generated: 0
• Review effort level: Lite

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[faze-geek]

@pitrou Would you mind approving workflows ?