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/testData/diagnostics/testsWithJsStdLib/native/enumEntry.txt

@@ -17,6 +17,7 @@ public final external enum class E : kotlin.Enum<E> {
     public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
 
     // Static members
+    public final /*synthesized*/ val entries: kotlin.enums.EnumEntries<E>
     public final /*synthesized*/ fun valueOf(/*0*/ value: kotlin.String): E
     public final /*synthesized*/ fun values(): kotlin.Array<E>
 }

compiler/testData/diagnostics/testsWithJsStdLib/native/externalInterfaceNested.txt

@@ -30,6 +30,7 @@ public external interface I {
         public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
 
         // Static members
+        public final /*synthesized*/ val entries: kotlin.enums.EnumEntries<I.E>
         public final /*synthesized*/ fun valueOf(/*0*/ value: kotlin.String): I.E
         public final /*synthesized*/ fun values(): kotlin.Array<I.E>
     }

compiler/testData/diagnostics/testsWithJsStdLib/native/inheritance.txt

@@ -41,6 +41,7 @@ public final external enum class E : kotlin.Enum<E> {
     public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
 
     // Static members
+    public final /*synthesized*/ val entries: kotlin.enums.EnumEntries<E>
     public final /*synthesized*/ fun valueOf(/*0*/ value: kotlin.String): E
     public final /*synthesized*/ fun values(): kotlin.Array<E>
 }
@@ -58,6 +59,7 @@ public final external enum class F : kotlin.Enum<F>, I {
     public open override /*2*/ /*fake_override*/ fun toString(): kotlin.String
 
     // Static members
+    public final /*synthesized*/ val entries: kotlin.enums.EnumEntries<F>
     public final /*synthesized*/ fun valueOf(/*0*/ value: kotlin.String): F
     public final /*synthesized*/ fun values(): kotlin.Array<F>
 }

compiler/testData/diagnostics/testsWithJsStdLib/native/inlineClass.txt

@@ -22,6 +22,7 @@ public final external inline enum class E : kotlin.Enum<E> {
     public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 
     // Static members
+    public final /*synthesized*/ val entries: kotlin.enums.EnumEntries<E>
     public final /*synthesized*/ fun valueOf(/*0*/ value: kotlin.String): E
     public final /*synthesized*/ fun values(): kotlin.Array<E>
 }

compiler/testData/diagnostics/testsWithJsStdLib/native/innerClass.txt

@@ -34,6 +34,7 @@ public final external enum class E : kotlin.Enum<E> {
     }
 
     // Static members
+    public final /*synthesized*/ val entries: kotlin.enums.EnumEntries<E>
     public final /*synthesized*/ fun valueOf(/*0*/ value: kotlin.String): E
     public final /*synthesized*/ fun values(): kotlin.Array<E>
 }