`supportsEnumEntries` in `EnumCLassLowering` is not really
needed, but it was left just in case.
Both K1 and K2 ensure the feature is
enabled before they generate IR.
`supportsEnumEntries` is not enough, because the frontend will not
generate `entries` if `kotlin.enums.EnumEntries` is not available
(linking against an outdated stdlib is considered a valid use-case).
From the resolution point of view,
it's OK to resolve into `entries` while
the feature is off, because then K1 reports an error on the call site.
^KT-56687 Fixed
^KT-55614 Fixed
Nikolay Lunyak
bb368bd191