Code Review Diff Viewer capability update to render large diffs

AI Impact Summary

This CAPABILITY change pertains to the code review UI’s diff rendering. The note that large diffs were previously not rendered by default suggests the update enables or relaxes that limitation, allowing larger diffs to be viewed within the Diff Viewer. For teams, this can speed reviews of substantial changes, but it may increase rendering load on the UI and backend when large diffs are opened, necessitating monitoring and potential performance tuning.