Redoc.init callback not working on error

[broccolism]

Describe the bug
Callback function registered on Redoc.init is not called on error while rendering redoc.

Redoc.init(
  event.data,
  config,
  document.getElementById('redoc-container'),
  callback ---> doesn't seem to be called.
);

If something's wrong in my code, please tell me how to apply callback function on error.

Expected behavior
Callback function should be called on error.

Minimal reproducible OpenAPI snippet(if possible)

Screenshots

Additional context
Add any other context about the problem here.

[RomanHotsiy]

I believe this functionality was lost during rewriting this to React a while ago.

PR would be appreciated!

[broccolism]

@RomanHotsiy Hi! Thanks for checking this issue.
I found #2195 and https://github.com/Redocly/redoc/pull/2182/files which fixed this bug on Oct 21,
but I also found the source code of the latest version (Release 2.0.0, Sep 13) does not have those lines to call onLoaded function.
Is this what you said?

[RomanHotsiy]

Yeah, this is the reason most likely.

I wander why those lines were removed. Would be cool to find it in git history.

[broccolism]

@RomanHotsiy Since I'm new here so it could be wrong, but I guess
this PR accidentally removed them.😂

Anyways, they seem to be came back on current main branch so I think it would be fixed on next release.
Can you tell me when is the next release? My team is using redoc and we really need this callback function. Thanks.