fix: avoid call finalizeStage more times than once. (#1650)

[He-Pin]

(cherry picked from commit 7fef5b7)

[pjfanning]

You keep raising PRs against the wrong branch.

I don't think this should be merged to 1.1 yet. I am not convinced that this issue is causing major issues and therefore would not justify being added in a patch.

[He-Pin]

It will cause problems in 1.0.x, but still, it may call twice GraphStageLogic#postStop in 1.1.x, and we are using it at work :(

[pjfanning]

Can we hold off merging to patch branches for a few days so that the changes can be more widely reviewed?

[He-Pin]

@pjfanning Okay, Let's do this next weekend.

[pjfanning]

My preference is not to backfit changes that are not definitely causing major issues.
With the main branch, we could start doing milestone releases, eg 1.2.0-M1. We just need more people to get involved in voting on releases.

[He-Pin]

let's keep this open to see if a user requests it.