refactor(fspy): gate ipc_channel_conf on non-musl targets (#327) #1230

Job	Run time
Format and Check Deps	1m 2s
detect-changes	4s
Test (musl)	2m 56s
Clippy	1m 12s
Test (namespace-profile-mac-default, x86_64-apple-darwin, cargo, x86_64-apple-darwin)	2m 14s
Test (namespace-profile-mac-default, aarch64-apple-darwin, cargo, aarch64-apple-darwin)	57s
Test (namespace-profile-linux-x64-default, x86_64-unknown-linux-gnu, cargo-zigbuild, x86_64-unkno...	1m 13s
Test (windows-latest, x86_64-pc-windows-msvc, cargo, x86_64-pc-windows-msvc)	4m 40s
done	3s
	14m 21s

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