refactor(semantic, transformer): simplify FxIndexMap type aliases

[overlookmotel]

Pure refactor. Simplify FxIndexMap type aliases by using rustc_hash's FxBuildHasher, instead of longhand BuildHasherDefault<FxHasher>.

[graphite-app]

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[overlookmotel]

• refactor(semantic, transformer): simplify FxIndexMap type aliases #7524 👈 (View in Graphite)
• main

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[codspeed-hq]

CodSpeed Performance Report

Merging #7524 will not alter performance

_{Comparing 11-28-refactor_semantic_transformer_simplify_fxindexmap_type_aliases (d21448b) with main (169b8bf)}

Summary

✅ 30 untouched benchmarks

[Boshen]

Merge activity

• Nov 28, 6:43 AM EST: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
• Nov 28, 6:43 AM EST: A user added this pull request to the Graphite merge queue.
• Nov 28, 7:07 AM EST: A user merged this pull request with the Graphite merge queue.