stream: avoid constructing extra promise in `createPromiseCallback` #6259

Job	Run time
Build slim tarball	1m 14s
collect-openssl-versions	7s
aarch64-linux: Cache V8 build	1h 7m 9s
x86_64-linux: with shared libraries	2h 5m 46s
x86_64-darwin: with shared libraries	3h 50m 16s
aarch64-darwin: with shared libraries	2h 2m 12s
aarch64-linux: with shared openssl_4_0 (4.0.0)	26m 15s
aarch64-linux: with shared openssl_3 (3.0.19)	27m 25s
aarch64-linux: with shared openssl_1_1 (1.1.1w)	26m 16s
aarch64-linux: with shared openssl_3_6 (3.6.1)	26m 19s
aarch64-linux: with shared openssl_3_5 (3.5.5)	26m 56s
	11h 19m 55s

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