Merge branch 'sy-stop-stupid-flashing' into 'master'

Stop flashing opacity of issue description on details expand/collapse

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/117180



Merged-by: Alexander Turinske <aturinske@gitlab.com>
Approved-by: Stanislav Lashmanov <slashmanov@gitlab.com>
Approved-by: Michael Le <mle@gitlab.com>
Approved-by: Alexander Turinske <aturinske@gitlab.com>
Reviewed-by: Sarah Yasonik <syasonik@gitlab.com>
Reviewed-by: Stanislav Lashmanov <slashmanov@gitlab.com>
Co-authored-by: syasonik <syasonik@gitlab.com>