**Why?**

Previously it managed this as an internal data property, but there
was extra complexity involved because the component doesn't have
all the information it needs (i.e. the `mouseOver` prop).

This is a good opportunity to colocate the data prop with the component
that has the information to change it (i.e. `file_row`) and let
`new_dropdown/index` receive this value as a prop.

- added suggestions to mock data
- fixed props to be not required

Untangle Markdown/Diffs/Notes CSS mess

See merge request gitlab-org/gitlab-ce!26493

Remove .raw from JavaScript fixture file names

Closes #59201

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

(cherry picked from commit 79a45f7f02939a1c2fc1f378e43ec9b96630f918)

This reverts merge request !26430

Remove .raw from JavaScript fixture file names

Closes #59201

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

This commit updates the pipeline page  and related components to include
new pipeline information added by the post-merge pipeline feature.