Reverts zed-industries/zed#41384
The branch-protection rules work much better when there is a Job that
runs every time and can be depended on to pass, we no longer have this.
Release Notes:
- N/A
Follow up for: #41304
Splits CI tests (cherry-picks and PRs only for now) into separate
workflows using `gh-workflow`. Includes a couple restructures to
- run more things in parallel
- remove our previous shell script based checking to filter tests based
on files changed, instead using the builtin `paths:` workflow filters
Splitting the docs/style/rust tests & checks into separate workflows
means we lose the complete summary showing all the tests in one view,
but it's possible to re-add in the future if we go back to checking what
files changed ourselves or always run everything.
Release Notes:
- N/A *or* Added/Fixed/Improved ...
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Co-authored-by: Conrad <conrad@zed.dev>
