stream: remove transform-writer handling in pipeTo #7532

Job	Run time
Build slim tarball	1m 10s
aarch64-linux: Cache V8 build	25s
aarch64-darwin: with shared libraries	24m 40s
x86_64-darwin: with shared libraries	40m 41s
x86_64-linux: with shared libraries	27m 24s
aarch64-linux: with shared openssl-3.5.6	24m 18s
aarch64-linux: with shared openssl-3.0.20	23m 36s
aarch64-linux: with shared openssl-3.6.2	24m 41s
aarch64-linux: with shared openssl-1.1.1w	23m 41s
aarch64-linux: with shared boringssl-0.20260508.0	23m 50s
aarch64-linux: with shared openssl-4.0.0	23m 33s
Build slim tarball	1m 10s
x86_64-linux: with shared libraries	27m 24s
aarch64-darwin: with shared libraries	24m 40s
aarch64-linux: Cache V8 build	25s
x86_64-darwin: with shared libraries	40m 41s
aarch64-linux: with shared openssl-3.6.2	21m 37s
aarch64-linux: with shared openssl-3.5.6	24m 18s
aarch64-linux: with shared boringssl-0.20260508.0	23m 50s
aarch64-linux: with shared openssl-4.0.0	23m 33s
aarch64-linux: with shared openssl-1.1.1w	23m 41s
aarch64-linux: with shared openssl-3.0.20	23m 36s
	7h 52m 54s

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