stream: deprecate legacy prependListener fallback #4672

Job	Run time
Build slim tarball	2m 0s
aarch64-darwin: with shared libraries	20m 5s
x86_64-linux: with shared libraries	21m 14s
x86_64-darwin: with shared libraries	38m 2s
aarch64-linux: with shared libraries	17m 20s
	1h 38m 41s

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