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/incompleteCode/diagnosticWithSyntaxError/incompleteEnumReference.txt

@@ -21,6 +21,7 @@ public final 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>
 }