[K/N, K/JS, K/WASM] Enable FakeOverrideRebuilder by default

While not beeing final solution, this is closer to what
we want to have in the end. Enabling on non-JVM targets
would help better testing.

Enabling in JVM is now not possible yet, as some of the bugs are
not fixed yet (check KT-61360 for details)

^KT-62476

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

@@ -1,3 +1,6 @@
+// KT-64271, KT-64382
+// IGNORE_BACKEND_K2: NATIVE, WASM, JS_IR, JS_IR_ES6
+
 enum class TestFinalEnum1 {
     X1
 }