IR text tests: Unmute enum class-related tests

Making enum class-related tests unmuted requires implementing
a special "compatibility" mode for IR tree dumper to filter out
fake override declarations leaking from java.enum.Enum and
kotlin.Enum (JVM-only) classes.

compiler/testData/ir/irText/classes/enumClassModality.kt

@@ -1,6 +1,3 @@
-// IGNORE_BACKEND: JS_IR NATIVE
-// ^ KT-61141: absent enum fake_overrides: finalize (K1), getDeclaringClass (K1), clone (K2)
-
 enum class TestFinalEnum1 {
     X1
 }