These tests are not meant as a replacement to test-js with the -b option
but are meant to test simple cases until that works.
Before this it was very easy to accidentally break bytecode since no
tests were run in bytecode mode. This hopefully makes it easier to spot
such regressions :^).
These were missed in 565a880ce5.
This wasn't an issue because these tests don't pledge/unveil anything,
so they could happily dlopen() the library at runtime. But this is now
needed in order to migrate LibUnicode towards weak symbols instead.
