[minor] fix testdata for compiler 1.4

compiler/testData/codegen/bytecodeText/whenEnumOptimization/differentEnumClasses.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: -ProhibitComparisonOfIncompatibleEnums
+
 enum class A {
     O, K
 }

compiler/testData/codegen/bytecodeText/whenEnumOptimization/differentEnumClasses2.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: -ProhibitComparisonOfIncompatibleEnums
+
 enum class A {
     OK
 }