Steps to reproduce the issue

See here:
http://issues.joomla.org/tracker/joomla-cms/4278

I have update the status from Pending to RTC but it don't add the label on github (joomla/joomla-cms#4278).

See also here:
http://issues.joomla.org/tracker/joomla-cms/4274

I have update the status from Pending to RTC after this i have add a commit (fixing CS) than the jissues-bot add the label (joomla/joomla-cms#4274).

Expected result

If i update the status on JIssues to RTC the label on github will add.

Actual result

Only if i set the status to RTC and after this commit some code the label get add on github

Additional comments

This function was introduced with this commit: 08be5c5 and use onPullAfterUpdate Hook/Event. But it looks like that it is never trigger by update the state on Jissues only.

A other example that do similar is the closed state. If I close a issue on Jissues the jissues-bot will do it immediately on github.
The same thing I would expect for the RTC state.

So the code for the Closed state is here:
https://github.com/joomla/jissues/blob/master/src/App/Tracker/Controller/Issue/Save.php#L216-243

I think we should trigger here also the adding of the RTC label.

I think here: https://github.com/joomla/jissues/blob/master/src/App/Tracker/Controller/Issue/Save.php#L144
or here:
https://github.com/joomla/jissues/blob/master/src/App/Tracker/Controller/Issue/Save.php#L187
can be a good place to do this.