stream: fix isErrored/isWritable for WritableStreams #1403

Job	Run time
Build slim tarball	1m 35s
x86_64-linux: with shared libraries	29m 20s
aarch64-darwin: with shared libraries	29m 41s
aarch64-linux: with shared libraries	25m 12s
x86_64-darwin: with shared libraries	1h 0m 1s
	2h 25m 49s

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