For reasoning refer to the message of the previous commit
It is the same as for `getIrFunctionSymbol`
There is one failing test here, caused by KT-61941
The issue was here before this commit, but it was hidden
We are going to deprecate `WITH_RUNTIME` directive. The main reason
behind this change is that `WITH_STDLIB` directive better describes
its meaning, specifically it will add kotlin stdlib to test's classpath.
Dmitriy Novozhilov