Merge branch 'tmike-deprecation-totalweight' into 'master'

Add deprecation for totalWeight board list field

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/125504



Merged-by: Marcin Sedlak-Jakubowski <msedlakjakubowski@gitlab.com>
Approved-by: Donald Cook <dcook@gitlab.com>
Approved-by: Vladimir Shushlin <vshushlin@gitlab.com>
Approved-by: Marcin Sedlak-Jakubowski <msedlakjakubowski@gitlab.com>
Reviewed-by: Donald Cook <dcook@gitlab.com>
Reviewed-by: Marcin Sedlak-Jakubowski <msedlakjakubowski@gitlab.com>