stream: simplify `createPromiseCallback` #5293

Job	Run time
Build slim tarball	2m 17s
x86_64-darwin: with shared libraries	28m 38s
x86_64-linux: with shared libraries	20m 40s
aarch64-darwin: with shared libraries	18m 40s
aarch64-linux: with shared libraries	17m 50s
	1h 28m 5s

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