Rust: Fix performance issue with additionalExternalFile#21671

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geoffw0 wants to merge 2 commits intogithub:mainfrom

geoffw0:neutralperf

Commits on Apr 8, 2026

Rust: Fix performance issue with File.fromSource.
geoffw0
committed

Commits on Apr 9, 2026

Rust: Proposed improved solution.
geoffw0
committed