Merge branch 'chat_react_base_claude_3_7-feature-flag' into 'master'

Push duo_chat_react_agent_claude_3_7 feature flag

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/182668



Merged-by: Tetiana Chupryna <tchupryna@gitlab.com>
Approved-by: Eva Kadlecová <ekadlecova@gitlab.com>
Approved-by: Tetiana Chupryna <tchupryna@gitlab.com>
Reviewed-by: Eva Kadlecová <ekadlecova@gitlab.com>
Co-authored-by: Shinya Maeda <shinya@gitlab.com>