Resume code review after source branch changes
<!--IssueSummary start--> <details> <summary> Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards. </summary> - [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=13773) </details> <!--IssueSummary end--> ## Problem to solve While performing a code review, if the source branch changes and I reload the page, my in progress review may have comments against lines that were added and now removed, and I can no longer access them. ## Further details This is a hard problem to solve because it creates a situation where the user needs to jump backwards and forwards between revisions. ## Proposal I should be able to jump to old versions of a file to see my draft comments on them. ## Links / references
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