fixes #1383 debug sessions

[oneslash]

Trying to fix #1383

[oneslash]

@ramya-rao-a, not sure why tests are failing.

[oneslash]

@ramya-rao-a, okay after rebase all tests are passing :)

[ramya-rao-a]

@oneslash The codelens get rendered once for each function and dont get re-rendered until that line goes out of sight from the user.

So, this change will ensure that we dont render the code lens if there is an active session.

But once the code lens does appear, and the user clicks on it, this change will not make it go away, will it?

[oneslash]

@ramya-rao-a, yes you are right, I will close this for now, I will be busy for one month.