Merge branch 'eduardosanz/fix-js-racing-conditions' into 'master'

Fix two racing conditions related to JavaScript

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/143829



Merged-by: Eduardo Sanz García <esanz-garcia@gitlab.com>
Approved-by: Harsha Muralidhar <hmuralidhar@gitlab.com>
Approved-by: Aboobacker MK <akarakath@gitlab.com>
Approved-by: Drew Blessing <drew@gitlab.com>