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/loadCompiledKotlin/fromLoadJava/Enum.txt

@@ -5,6 +5,9 @@ public final enum class Test : R|kotlin/Enum<test/Test>| {
     public final static fun values(): R|kotlin/Array<test/Test>| {
     }
 
+    public final static val entries: R|kotlin/enums/EnumEntries<test/Test>|
+        public get(): R|kotlin/enums/EnumEntries<test/Test>|
+
     private constructor(a: R|kotlin/Int|): R|test/Test|
 
     public final static enum entry A: R|test/Test|