stream: propagate destruction in duplexPair #5140

Job	Run time
Build slim tarball	2m 54s
aarch64-darwin: with shared libraries	20m 4s
x86_64-darwin: with shared libraries	31m 30s
aarch64-linux: with shared libraries	18m 21s
x86_64-linux: with shared libraries	21m 16s
	1h 34m 5s

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