Add test for normative change to BlockStatement

Normative: continue labels should not pass through blocks
https://github.com/tc39/ecma262/pull/2482

test/language/statements/block/labeled-continue.js

@@ -0,0 +1,24 @@
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-static-semantics-containsundefinedcontinuetarget
+description: Clears label set in check for undefined `continue` target
+info: |
+  With arguments iterationSet and labelSet.
+
+  Statement : BlockStatement
+
+  1. Return ContainsUndefinedContinueTarget of |BlockStatement| with arguments
+     _iterationSet_ and « ».
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+label: {
+  for ( ;; ) {
+    continue label;
+  }
+}