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/enum/EnumVisibility.txt

@@ -5,6 +5,9 @@ internal final enum class In : R|kotlin/Enum<test/In>| {
     public final static fun values(): R|kotlin/Array<test/In>| {
     }
 
+    public final static val entries: R|kotlin/enums/EnumEntries<test/In>|
+        public get(): R|kotlin/enums/EnumEntries<test/In>|
+
     private constructor(): R|test/In|
 
     public final static enum entry A: R|test/In|
@@ -17,6 +20,9 @@ private final enum class Pr : R|kotlin/Enum<test/Pr>| {
     public final static fun values(): R|kotlin/Array<test/Pr>| {
     }
 
+    public final static val entries: R|kotlin/enums/EnumEntries<test/Pr>|
+        public get(): R|kotlin/enums/EnumEntries<test/Pr>|
+
     private constructor(): R|test/Pr|
 
     public final static enum entry A: R|test/Pr|
@@ -29,6 +35,9 @@ public final enum class Pu : R|kotlin/Enum<test/Pu>| {
     public final static fun values(): R|kotlin/Array<test/Pu>| {
     }
 
+    public final static val entries: R|kotlin/enums/EnumEntries<test/Pu>|
+        public get(): R|kotlin/enums/EnumEntries<test/Pu>|
+
     private constructor(): R|test/Pu|
 
     public final static enum entry A: R|test/Pu|

compiler/fir/analysis-tests/testData/loadCompiledKotlin/enum/EnumWithConstuctor.txt

@@ -8,6 +8,9 @@ public final enum class En : R|kotlin/Enum<test/En>| {
     public final val b: R|kotlin/Boolean|
         public get(): R|kotlin/Boolean|
 
+    public final static val entries: R|kotlin/enums/EnumEntries<test/En>|
+        public get(): R|kotlin/enums/EnumEntries<test/En>|
+
     public final val i: R|kotlin/Int|
         public get(): R|kotlin/Int|
 

compiler/fir/analysis-tests/testData/loadCompiledKotlin/enum/EnumWithInnerClasses.txt

@@ -23,6 +23,9 @@ public final enum class Enum : R|kotlin/Enum<test/Enum>| {
     public final val c: R|kotlin/Int|
         public get(): R|kotlin/Int|
 
+    public final static val entries: R|kotlin/enums/EnumEntries<test/Enum>|
+        public get(): R|kotlin/enums/EnumEntries<test/Enum>|
+
     private constructor(): R|test/Enum|
 
     public final static enum entry ENTRY1: R|test/Enum|

compiler/fir/analysis-tests/testData/loadCompiledKotlin/enum/InnerEnum.txt

@@ -6,6 +6,9 @@ public final class A : R|kotlin/Any| {
         public final static fun values(): R|kotlin/Array<test/A.E>| {
         }
 
+        public final static val entries: R|kotlin/enums/EnumEntries<test/A.E>|
+            public get(): R|kotlin/enums/EnumEntries<test/A.E>|
+
         private constructor(): R|test/A.E|
 
         public final static enum entry ENTRY: R|test/A.E|

compiler/fir/analysis-tests/testData/loadCompiledKotlin/enum/InnerEnumExistingClassObject.txt

@@ -11,6 +11,9 @@ public final class A : R|kotlin/Any| {
         public final static fun values(): R|kotlin/Array<test/A.E>| {
         }
 
+        public final static val entries: R|kotlin/enums/EnumEntries<test/A.E>|
+            public get(): R|kotlin/enums/EnumEntries<test/A.E>|
+
         private constructor(): R|test/A.E|
 
         public final static enum entry ENTRY: R|test/A.E|

compiler/fir/analysis-tests/testData/loadCompiledKotlin/enum/SimpleEnum.txt

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