[JS IR] Adapt stepping tests for Kotlin/JS

compiler/testData/debug/stepping/constantConditions.kt

@@ -14,12 +14,17 @@ fun test(): Long {
     return 1
 }
 
-// EXPECTATIONS
+// EXPECTATIONS JVM JVM_IR
 // test.kt:5 box
 // EXPECTATIONS JVM_IR
 // test.kt:9 test
-// EXPECTATIONS
+// EXPECTATIONS JVM JVM_IR
 // test.kt:10 test
 // test.kt:11 test
 // test.kt:5 box
 // test.kt:6 box
+
+// EXPECTATIONS JS_IR
+// test.kt:5 box
+// test.kt:11 test
+// test.kt:11 test