[K/N] Convert and enable some tests using System.out?.println()

^KT-59057

Merge-request: KT-MR-10546
Merged-by: Vladimir Sukharev <Vladimir.Sukharev@jetbrains.com>

compiler/testData/codegen/box/controlStructures/kt769.kt

@@ -1,10 +1,3 @@
-// IGNORE_BACKEND: WASM
-// WASM_MUTE_REASON: IGNORED_IN_JS
-// IGNORE_BACKEND: JS_IR
-// IGNORE_BACKEND: JS_IR_ES6
-// TODO: muted automatically, investigate should it be ran for JS or not
-// IGNORE_BACKEND: JS, NATIVE
-
 package w_range
 
 fun box() : String {
@@ -13,6 +6,5 @@ fun box() : String {
         1 -> i--
         else -> { i = 2 }
     }
-    System.out?.println(i)
-    return "OK"
+    return if (i == 2) "OK" else i.toString()
 }