Catch Throwable in PublisherJobQueue

[wezell]

Every once in awhile something is killing our PublisherJobQueue stateful job in Quartz. When this happens, we do not see anything in the logs and the job just stops and never restarts. While we catch Exception, I think we should catch Throwable exceptions to prevent the job from dying.

[nollymar]

PR: #22851

[wezell]

To test - run in a debugger, add a breakpoint and throw a new throwable. If you see the PublisherJobQueue job run again a minute later, it is good.

[nollymar]

Internal QA: Passed.

I checked this out using the IDE debugging feature. For this reason, I'm passing QA too