this before super() is a runtime error, not a static one. (#6467)

* Check that super.* is after super() at runtime

* "missing super() call in constructor" runtime

* "'this' is not allowed before super()" runtime

packages/babel-plugin-transform-classes/test/fixtures/spec/super-reference-before-in-lambda/exec.js

@@ -0,0 +1,12 @@
+class Bar {
+  test() {}
+}
+
+class Foo extends Bar {
+  constructor() {
+    const t = () => super.test()
+    super();
+  }
+}
+
+new Foo();