Revert breaking behavioural change

[jwulf]

Description of the change

Log out when a job cannot be found by job.complete() or job.fail(), but do not throw the exception. This preserves the existing behaviour, where no exception is thrown, but makes the user aware of the condition.

You can catch the condition in the following way, if you want to:

job.complete().catch(
   e => {
      if ((e as Error).message.includes('5 NOT_FOUND')) {
         // the job was completed, failed, or the process instance was cancelled
      }
   })

Type of change

• Bug fix
• New feature
• Breaking change
• Documentation update

Checklist

• I have read the CONTRIBUTING doc
• I have opened this pull request against the alpha branch
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

Further comments

[If this is a relatively large or complex change, kick off the discussion by explaining why you chose the solution you did and what alternatives you considered, etc...]