The replay job execute other jobs but not trough JobExecutor but children jobs are reusing the parent's job context by default.
This cause issue with some extension jobs (see
XWIKI-16627 for a possible consequence) and since ReplayJob does not really need any ExecutionContext the best is to make sure it does not define any.
- is duplicated by
XWIKI-16627 Replaying two XAR ExtensionJobHistoryRecord entries won't perform correctly the second one
- relates to
XCOMMONS-1702 Replaying extension history records doesn't work anymore