chore: export NodeHealthProxyLayer #1415

Job	Run time
preflight / preflight	41s
cargo-check-benches (master)	26m 15s
test-frame-ui	31m 47s
cargo-check-benches (current)	29m 54s
test-full-crypto-feature	2m 34s
test-node-metrics	10m 51s
cargo-check-all-crate-macos	10m 14s
cargo-check-each-crate (1)	16m 31s
cargo-check-each-crate (2)	20m 26s
cargo-check-each-crate (3)	5m 4s
cargo-check-each-crate (4)	17m 15s
cargo-check-each-crate (5)	23m 47s
cargo-check-each-crate (6)	13m 47s
cargo-check-each-crate (7)	30m 19s
test-frame-examples-compile-to-wasm	3m 5s
test-deterministic-wasm	6m 28s
check-tracing	2m 14s
check-metadata-hash	6m 27s
cargo-hfuzz	9m 14s
node-bench-regression-guard	14s
All test misc tests passed	1s
	4h 27m 8s

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