test: relax expectations in test-icu-transcode
Chromium's ICU considers "latin1" and "ascii" to mean Windows-1252, which is consistent with WHATWG spec. If linked against Chromium's ICU, Node.js therefore fails test/parallel/test-icu-transcode
.
Refs: https://github.com/nodejs/node/issues/25851
Checklist
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make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
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