Sometimes when running MPP tests we may
observe js-specific modules running with
the jvm-specific fir2ir converter
(probably because the name didn't contain
the JVM affix).
In this example we get 2 variants of `kotlin/toString()`:
one coming from the KLib provider, and the
other coming from the builtins provider.
These are identical deserialized functions.
^KT-57601 Fixed
Nikolay Lunyak