streams: forward errors correctly for duplexPair endpoints #4165

Job	Run time
Build slim tarball	2m 15s
aarch64-darwin: with shared libraries	18m 58s
x86_64-linux: with shared libraries	21m 47s
x86_64-darwin: with shared libraries	38m 50s
aarch64-linux: with shared libraries	19m 44s
	1h 41m 34s

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