Remove .raw from JavaScript fixture file names

Closes #59201

See merge request gitlab-org/gitlab-ce!26430

(cherry picked from commit 79a45f7f)

This reverts merge request !26430

There is nothing more to say but

"Commits that change 30 or more lines across at least three files
must describe these changes in the commit body"

Replace all HAML fixtures with the generated HTML files.