Merge branch 'throttle-jira-connect-sync' into 'master'

Submit JiraConnect::SyncBranchWorker in batches

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/120866



Merged-by: Luke Duncalfe <lduncalfe@gitlab.com>
Approved-by: Luke Duncalfe <lduncalfe@gitlab.com>
Approved-by: Jerry Seto <jseto@gitlab.com>
Reviewed-by: Vasilii Iakliushin <viakliushin@gitlab.com>
Reviewed-by: Luke Duncalfe <lduncalfe@gitlab.com>
Reviewed-by: Jerry Seto <jseto@gitlab.com>
Co-authored-by: Robert May <rmay@gitlab.com>
Co-authored-by: Danger bot <group_9970_bot_58e69a7d2ace73c7373ac2bc2a5cabd0@noreply.gitlab.com>