Fixes CompileKotlinAgainstCustomBinariesTest.testInternalFromForeignModule
after unifying non-build-file mode and build-file mode.
Previously when the compiler was run without -Xbuild-file argument,
it was not using modules internally, so we were not checking if internal
descriptors were contained in destination dir of current module
(without -Xbuild-file we were returning false at `if (modules.isEmpty())
return false` in `ModuleVisibilityHelperImpl#isInFriendModule`).
After switching to using modules for CLI compilation,
any jar file contained in destination dir was considered friend,
because only a prefix was checked.
Alexey Tsvetkov
db6a7779b8