fix(db): close entry MatchIt::match.data [stale_ceiling]

[ndohpenngit]

What does this PR do?

Auto-generated by the staleness remediation agent.
Action: Close entry (window archaeologically unreachable)

Entry

MatchIt::match.data

• Staleness: stale_ceiling
• Gap: to_version 4.4.9 -> current 4.7.2
• Reference: N/A

Changelog evidence

The changelog shows match.data() was renamed to match_data() in MatchIt 4.7.0 (2025-01-12) with match.data() remaining as a backward-compatible alias. Current CRAN is at 4.7.2 (2025-05-30), 2+ major versions ahead of to_version 4.4.9. The behavior change described occurred in 4.1.0 (2020-era, 5+ years ago); no realistic user on modern MatchIt versions would encounter the unmitigated risk. The alias ensures backward compatibility for affected code.

Related issues

Part of the weekly staleness remediation run. Update the staleness tracking
issue once this PR is merged.

Type of change

• Bug fix
• New feature
• Database entry correction
• Documentation
• Other

Checklist

• Claim verified against official changelog (by agent)
• Human reviewer has spot-checked the changelog evidence
• validate CI check passes in reproducr-db
• sync_db.R runs cleanly after merge
• Tracking issue updated