Follow #25229
Copy from
https://github.com/go-gitea/gitea/pull/26290#issuecomment-1663135186
The bug is that we cannot get changed files for the
`pull_request_target` event. This event runs in the context of the base
branch, so we won't get any changes if we call
`GetFilesChangedSinceCommit` with `PullRequest.Base.Ref`.
Fix#25736
Caused by #24048
Right now we only check the activity type for `pull_request` event when
`types` is specified or there are no `types` and filter. If a workflow
only specifies filters but no `types` like this:
```
on:
pull_request:
branches: [main]
```
the workflow will be triggered even if the activity type is not one of
`[opened, reopened, sync]`. We need to check the activity type in this
case.
Co-authored-by: Giteabot <teabot@gitea.io>
Fix#25088
This PR adds the support for
[`pull_request_target`](https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#pull_request_target)
workflow trigger. `pull_request_target` is similar to `pull_request`,
but the workflow triggered by the `pull_request_target` event runs in
the context of the base branch of the pull request rather than the head
branch. Since the workflow from the base is considered trusted, it can
access the secrets and doesn't need approvals to run.
