Break/finally chain in suspend function test fix & workaround

compiler/testData/codegen/box/coroutines/controlFlow/breakFinally.kt

@@ -1,5 +1,5 @@
-// IGNORE_BACKEND: JS_IR
 // IGNORE_BACKEND: JS
+// IGNORE_BACKEND: JS_IR
 // IGNORE_BACKEND: JVM_IR
 // WITH_RUNTIME
 // WITH_COROUTINES
@@ -47,8 +47,8 @@ fun box(): String {
                     result += "@"
                     for (y in listOf("F", "G")) {
                         try {
-                            result += suspendWithResult(z)
-                            if (z == "G") {
+                            result += suspendWithResult(y)
+                            if (y == "G") {
                                 break
                             }
                         }

js/js.inliner/src/org/jetbrains/kotlin/js/coroutine/CoroutineFunctionTransformer.kt

@@ -280,7 +280,18 @@ class CoroutineFunctionTransformer(private val function: JsFunction, name: Strin
                 statements += block.statements
             }
         }
-        val switchStatement = JsSwitch(stateRef.deepCopy(), cases)
+
+        // NOTE: temporary workaround to let tests run without hanging
+        // TODO: probably default statement should be removed asap the issue about nested break & finally is fixed
+        val defaultCase = JsDefault().apply {
+            val block = JsBlock(
+                assignment(stateRef, JsIntLiteral(indexOfGlobalCatch)).makeStmt(),
+                JsThrow(JsNew(JsNameRef("Error"), listOf(JsStringLiteral("State Machine Unreachable execution"))))
+            )
+            statements += block
+        }
+
+        val switchStatement = JsSwitch(stateRef.deepCopy(), cases + defaultCase)
         val loop = JsDoWhile(JsBooleanLiteral(true), JsTry(JsBlock(switchStatement), catch, null))
 
         return listOf(loop)