- rewords examples starting with 'should'
- rewords examples starting with 'it'

Note: I had to manually fixup "onlies" to "only"

https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/8731

A feature spec to test this simple behavior takes about 2 minutes to run
in CI. Everything it's testing is conditionals and `href` attributes,
which can easily be done in a view spec that runs in about 8 seconds.

System hooks were not being triggered when projects were archived or
unarchived. Reuse the Projects::UpdateService to automatically
trigger system hooks and increase code reuse.

This passed previously because the filtered group search is debounced by 0.5s. The test cleared the input, entered `group1`, cleared the input, entered nothing, and the all of groups are still listed because of the 0.5s debounce hasn't triggered and the test passes before anything is actually filtered.

Even if we assert that the list is filtered before clearing the input, the test still fails because the nature of the `fill_in 'filter', with: ""` method is that ["if you're setting the value to "", no keys are ever actually sent, hence no [`input`] event"](https://github.com/teamcapybara/capybara/issues/203#issuecomment-557281) and we never filter back to everything in the list.

So the solution is two-fold, add in the assertions that the list is actually filtered after each step. Then use a method that fills the input with proper events fired.

https://gitlab.com/gitlab-org/gitlab-ce/issues/23036