Merge branch '462473-cngo-add-view-summary-button' into 'master'

Add comment summarization to work items

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/181712



Merged-by: Deepika Guliani <dguliani@gitlab.com>
Approved-by: Nick Leonard <nleonard@gitlab.com>
Approved-by: Deepika Guliani <dguliani@gitlab.com>
Reviewed-by: Simon Knox <simon@gitlab.com>
Reviewed-by: Coung Ngo <cngo@gitlab.com>
Reviewed-by: Nick Leonard <nleonard@gitlab.com>
Reviewed-by: Deepika Guliani <dguliani@gitlab.com>
Co-authored-by: Coung Ngo <cngo@gitlab.com>