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/annotations/AnnotationInAnnotationArguments.txt

@@ -10,6 +10,9 @@ public final enum class E : R|kotlin/Enum<test/E>| {
     public final static fun values(): R|kotlin/Array<test/E>| {
     }
 
+    public final static val entries: R|kotlin/enums/EnumEntries<test/E>|
+        public get(): R|kotlin/enums/EnumEntries<test/E>|
+
     private constructor(): R|test/E|
 
     public final static enum entry ENTRY: R|test/E|

compiler/fir/analysis-tests/testData/loadCompiledKotlin/annotations/EnumArgumentWithCustomToString.txt

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

compiler/fir/analysis-tests/testData/loadCompiledKotlin/annotations/classMembers/EnumEntry.txt

@@ -21,6 +21,9 @@ public final enum class Eee : R|kotlin/Enum<test/Eee>| {
     public final static fun values(): R|kotlin/Array<test/Eee>| {
     }
 
+    public final static val entries: R|kotlin/enums/EnumEntries<test/Eee>|
+        public get(): R|kotlin/enums/EnumEntries<test/Eee>|
+
     private constructor(): R|test/Eee|
 
     public final static enum entry Entry1: R|test/Eee|

compiler/fir/analysis-tests/testData/loadCompiledKotlin/annotations/parameters/EnumConstructor.txt

@@ -15,6 +15,9 @@ public final enum class E : R|kotlin/Enum<test/E>| {
     public final static fun values(): R|kotlin/Array<test/E>| {
     }
 
+    public final static val entries: R|kotlin/enums/EnumEntries<test/E>|
+        public get(): R|kotlin/enums/EnumEntries<test/E>|
+
     public final val x: R|kotlin/String|
         public get(): R|kotlin/String|