streams: forward errors correctly for duplexPair endpoints #1674

Job	Run time
Build slim tarball	1m 31s
aarch64-linux: with shared libraries	2h 24m 48s
x86_64-linux: with shared libraries	2h 26m 45s
aarch64-darwin: with shared libraries	2h 36m 17s
x86_64-darwin: with shared libraries	2h 42m 26s
	10h 11m 47s

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