[v18.x backport] stream: fix deadlock when pipeing to full sink #49323
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When piping a paused Readable to a full Writable we didn't register a drain listener which cause the src to never resume.
Refs: #48666
PR-URL: #48691
Reviewed-By: Benjamin Gruenbaum benjamingr@gmail.com
Reviewed-By: Luigi Pinca luigipinca@gmail.com
Reviewed-By: Matteo Collina matteo.collina@gmail.com