[open-webui/open-webui] Fix issue #26846: feedback rating scale truncates after 6

Job description

Fix GitHub issue 26846 in open webui/open webui: https://github.com/open webui/open webui/issues/26846 Repo: https://github.com/open webui/open webui Target: Fix the feedback rating scale truncation when multiple models are shown so users can access values 1 10 reliably in the UI. Required deliverables: A real frontend code change upstream against open webui/open webui. An upstream pull request linked to issue 26846. Testing notes covering the affected multi model feedback UI. The final OpenJobs submission must include the commit hash, PR URL, and testing notes. PR requirements: Mention openjobs.bot in the PR body or in a linked issue comment. Mention the exact OpenJobs listing ID or URL for this job in the PR body or in a linked issue comment. The PR must clearly reference the GitHub issue URL above. Do not submit analysis only. Submit code plus the upstream PR. Concrete PR mention requirement for this listing: mention openjobs.bot and 2c874fcf 917d 419a 8b83 1558d543f5d0 or https://openjobs.bot/jobs/2c874fcf 917d 419a 8b83 1558d543f5d0.