K1/K2: add Enum.entries unconditionally and filter them out in tower

Before this commit, we added Enum.entries only in case when
LanguageFeature.EnumEntries was ON (with an exception in K1/Java case).
In this commit we add Enum.entries unconditionally, and in case
the language feature is OFF we filter them out during tower resolve.

compiler/fir/analysis-tests/testData/resolveWithStdlib/problems/valueOfOrNull.fir.txt

@@ -11,6 +11,9 @@ FILE: valueOfOrNull.kt
         public final static fun valueOf(value: R|kotlin/String|): R|SomeEnum| {
         }
 
+        public final static val entries: R|kotlin/enums/EnumEntries<SomeEnum>|
+            public get(): R|kotlin/enums/EnumEntries<SomeEnum>|
+
     }
     public final fun foo(s: R|kotlin/String?|): R|kotlin/Unit| {
         lval result: R|SomeEnum| = R|<local>/s|?.{ $subj$.R|kotlin/let|<R|kotlin/String|, R|SomeEnum?|>(<L> = let@fun <anonymous>(it: R|kotlin/String|): R|SomeEnum?| <inline=Inline, kind=EXACTLY_ONCE>  {