`AnyHashableSendable` ergonomics #133

Job	Run time
Wasm	48s
Linux (Swift 5.10)	42s
Windows (windows-latest, debug)	1m 34s
Linux (Swift 5.10)	47s
macOS (15.4, debug)	1m 47s
Windows (windows-latest, release)	1m 22s
macOS (15.4, release)	1m 37s
	8m 37s

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