With https://gitlab.com/gitlab-org/gitlab-foss/-/merge_requests/10669 we
introduced parsing and extracting and externalized strings in Vue
templates in HAML.

We have recently stopped writing Vue templates inside of HAML for
performance reasons and due to security concerns:

 -  https://gitlab.com/groups/gitlab-org/-/epics/5301
 -  https://gitlab.com/gitlab-org/gitlab/-/merge_requests/53922

Therefore we can stop searching for them in HAML files.