fixed spec because of object key change

changed to include new files
added getter spec

#44846

auto open new folder when creating item
scroll dropdown into view when opening

Closes #44838

fixed up duplicate is-collapsed classes

Improves the web IDE commit message imput by highlighting any characters
on the first line after 50 & every other line after 72

Closes #44832

added ellipsis to path but not name

added arrow key navigation in the dropdown
enter & click open the file
highlight occurrences of the searched text in the drppdown item
fixed some performance issues when rendering
limit the dropdown items to a maximum of 20 - this may change to more
depending on other performance changes

Closes #45314

fixed bug where unstaged file when discarded would not take staged file
changes

fixed icon not showing correctly in tab

simplified SET_FILE_ACTIVE openFiles map
use .find in router so that it returns early instead of looping all the
values

Pending tabs are normal tabs that are opened from the right sidebar.
They are opened in diff mode and when changed to edit mode they get
closed
& the actual file gets opened.

Closes #44293

Closes #44571

Also disables occurrences highlights & the line highlight for the review
mode.

Closes #44307

fixed SVG colors

Closes https://gitlab.com/gitlab-org/gitlab-ee/issues/4541

This also makes the IDE generally available