test: skip test-icu-transcode if ICU is not present
Fixes https://github.com/nodejs/node/issues/9511. Use icu's punycode implementation to make sure ICU is present or not in a test.
Checklist
-
make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
tests and/or benchmarks are included -
documentation is changed or added -
commit message follows commit guidelines
Affected core subsystem(s)
- test