Update docs for 'Rebase without CI/CD pipeline'
What does this MR do and why?
This MR adds a sentence to clarify the requirements for rebasing without a ci/cd pipeline - that if the setting 'pipelines must succeed' is selected, 'rebasing without a ci/cd pipeline' is not available.
Screenshots or screen recordings
The clarification added is detailed in your own merge request: !95736 (merged)
Edited by Steven Ritchie