Add EnumEntries to minimal-stdlib-for-tests

This change allows to revert adding `WITH_STDLIB` directive
to tests which happened at `a9343aeb`.

Co-authored-by: Alexander Udalov <Alexander.Udalov@jetbrains.com>

compiler/testData/diagnostics/tests/inner/illegalModifier_lv12.txt

@@ -70,6 +70,7 @@ public final class D {
         public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
 
         // Static members
+        public final /*synthesized*/ val entries: kotlin.enums.EnumEntries<D.R>
         public final /*synthesized*/ fun valueOf(/*0*/ value: kotlin.String): D.R
         public final /*synthesized*/ fun values(): kotlin.Array<D.R>
     }
@@ -106,6 +107,7 @@ public final enum class H : kotlin.Enum<H> {
     }
 
     // Static members
+    public final /*synthesized*/ val entries: kotlin.enums.EnumEntries<H>
     public final /*synthesized*/ fun valueOf(/*0*/ value: kotlin.String): H
     public final /*synthesized*/ fun values(): kotlin.Array<H>
 }