* Don't insert `__self: this` prior to `super()` calls (#13550)
`__self: this` is inserted for debugging purposes. However, it will cause a runtime error if it is inserted prior to a `super()` call in a constructor. This commit will prevent `__self: this` from inserted when there is a following `super()` call.
* Prevent adding `__self` within a constructor that has `super()` altogether.
* Fix 2 typos in the comments.
* Add an additional test case for constructors that do not have a `super()` call.
* Detect `super()` call by testing whether the class has a superclass.
* Update method name and corresponding comments
* Add an additional test for the case where the derived class do not have a `super()` call.
* Apply the same changes to babel-plugin-transform-react-jsx
