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/codegen/box/when/switchOptimizationMultipleMixedConditions.kt

@@ -1,4 +1,3 @@
-// WITH_STDLIB
 private fun parse(text: String) = when (text) {
     Numbers.One.name, "one", "1" -> 1
     Numbers.Two.name, "two", "2" -> 2