JS: add metadata for generated continuation classes to properly implement RTTI

compiler/testData/codegen/box/coroutines/instanceOfContinuation.kt

@@ -0,0 +1,30 @@
+// WITH_RUNTIME
+// WITH_REFLECT
+
+class Controller {
+    suspend fun runInstanceOf(x: Continuation<Boolean>) {
+        val y: Any = x
+        x.resume(x is Continuation<*>)
+    }
+
+    suspend fun runCast(x: Continuation<Boolean>) {
+        val y: Any = x
+        x.resume(Continuation::class.isInstance(y as Continuation<*>))
+    }
+}
+
+fun builder(coroutine c: Controller.() -> Continuation<Unit>) {
+    c(Controller()).resume(Unit)
+}
+
+fun box(): String {
+    var result = ""
+
+    builder {
+        result = runInstanceOf().toString() + "," + runCast().toString()
+    }
+
+    if (result != "true,true") return "fail: $result"
+
+    return "OK"
+}

compiler/tests-ir-jvm/tests/org/jetbrains/kotlin/codegen/ir/IrBlackBoxCodegenTestGenerated.java

@@ -4520,6 +4520,12 @@ public class IrBlackBoxCodegenTestGenerated extends AbstractIrBlackBoxCodegenTes
             doTest(fileName);
         }
 
+        @TestMetadata("instanceOfContinuation.kt")
+        public void testInstanceOfContinuation() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/coroutines/instanceOfContinuation.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("iterateOverArray.kt")
         public void testIterateOverArray() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/coroutines/iterateOverArray.kt");

compiler/tests/org/jetbrains/kotlin/codegen/BlackBoxCodegenTestGenerated.java

@@ -4520,6 +4520,12 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
             doTest(fileName);
         }
 
+        @TestMetadata("instanceOfContinuation.kt")
+        public void testInstanceOfContinuation() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/coroutines/instanceOfContinuation.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("iterateOverArray.kt")
         public void testIterateOverArray() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/coroutines/iterateOverArray.kt");