Merge branch 'reply-padding' into 'master'

Update "reply" input container

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/124491



Merged-by: Alexander Turinske <aturinske@gitlab.com>
Approved-by: Minahil Nichols <minahilnichols@gitlab.com>
Approved-by: Alexander Turinske <aturinske@gitlab.com>
Approved-by: Sascha Eggenberger <seggenberger@gitlab.com>
Co-authored-by: Annabel Dunstone Gray <annabel.dunstone@gmail.com>