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/resolve/unqualifiedEnum/priority.fir.txt

@@ -14,6 +14,9 @@ FILE: first.kt
         public final static fun valueOf(value: R|kotlin/String|): R|first/First| {
         }
 
+        public final static val entries: R|kotlin/enums/EnumEntries<first/First>|
+            public get(): R|kotlin/enums/EnumEntries<first/First>|
+
     }
     public final val THREE: R|first/First| = Q|first/First|.R|first/First.ONE|
         public get(): R|first/First|
@@ -33,6 +36,9 @@ FILE: second.kt
         public final static fun valueOf(value: R|kotlin/String|): R|second/Second| {
         }
 
+        public final static val entries: R|kotlin/enums/EnumEntries<second/Second>|
+            public get(): R|kotlin/enums/EnumEntries<second/Second>|
+
     }
     public final val ONE: R|second/Second| = Q|second/Second|.R|second/Second.THREE|
         public get(): R|second/Second|