We should materialize delegated declarations to process callables
in scopes correctly. Standalone mode works the same way as it
deserialize directly into FIR.
Another solution is to rework proto and stub serializer/deserializer to
restore FirFields like `$$delegate_0` correctly to work with
`FirDelegatedMemberScope`
^KT-62896 Fixed
^KT-64584 Fixed
Use test compiler runner to compile JS libraries. Determine compiler
by the specified TARGET_PLATFORM. Add tests for dynamic type and
JS-specific .proto extensions.
Refactor the code for mock library compilation to make the switch
between platforms more straightforward.
KTIJ-27566
KT-63217