Remove commit status running and warning to align GitHub (#25839)

Remove commit status running and warning to align GitHub (#25839)

Fix #25776. Close #25826.

In the discussion of #25776, @wolfogre's suggestion was to remove the
commit status of `running` and `warning` to keep it consistent with
github.

references:
-
https://docs.github.com/en/rest/commits/statuses?apiVersion=2022-11-28#about-commit-statuses

## :warning: BREAKING :warning:

So the commit status of Gitea will be consistent with GitHub, only
`pending`, `success`, `error` and `failure`, while `warning` and
`running` are not supported anymore.

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Co-authored-by: Jason Song <i@wolfogre.com>