feat(quinn-proto): Make compilable in wasm32-unknown-unknown and run wasm tests in CI #4931

Job	Run time
audit	27s
lint	1m 36s
features (ubuntu-latest)	39m 21s
msrv	29s
features (macos-latest)	14m 59s
test (ubuntu-latest, stable)	1m 0s
features (windows-latest)	26m 37s
test-android (x86_64-linux-android, x86_64, 26)	3m 31s
test (ubuntu-latest, beta)	1m 4s
test-android (i686-linux-android, x86, 26)	3m 31s
test-aws-lc-rs	1m 25s
test (macos-latest, stable)	1m 0s
test (windows-latest, stable)	1m 59s
test on freebsd	4m 19s
test wasm32-unknown-unknown	1m 10s
	1h 42m 28s

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