fix(actions): keep distinct commit statuses for workflows sharing a name (#37834)

## Summary

Two Gitea Actions workflow files that share the same `name:` and same
job name produced identical commit-status `Context` strings. Because
`GetLatestCommitStatus` groups by `context_hash` (derived from
`Context`), only one row was shown on the PR page — see #35699.

GitHub displays both rows even though they look identical. This change
does the same: the displayed `Context` is unchanged, but `ContextHash`
now mixes in the workflow file path so the two statuses remain distinct
in the dedupe query.

## Notes

- Workflows that omit `name:` now use the workflow file name in the
`Context` (e.g. `ci.yaml / build (push)`) instead of an empty `/ build
(push)`. This changes the `Context` string for unnamed workflows, so any
required-status-check rule that referenced the old string must be
updated after upgrade.
- For statuses created before this change (hashed from `Context` alone),
`createCommitStatus` reuses that legacy hash when a matching row is
still present, so in-flight pending statuses are superseded rather than
orphaned on upgrade.

Fixes #35699

---------

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>
Co-authored-by: silverwind <me@silverwind.io>

models/git/commit_status.go

@@ -505,13 +505,19 @@ func NewCommitStatus(ctx context.Context, opts NewCommitStatusOptions) error {
 		opts.CommitStatus.Description = strings.TrimSpace(opts.CommitStatus.Description)
 		opts.CommitStatus.Context = strings.TrimSpace(opts.CommitStatus.Context)
 		opts.CommitStatus.TargetURL = strings.TrimSpace(opts.CommitStatus.TargetURL)
+		opts.CommitStatus.ContextHash = strings.TrimSpace(opts.CommitStatus.ContextHash)
 		opts.CommitStatus.SHA = opts.SHA.String()
 		opts.CommitStatus.CreatorID = opts.Creator.ID
 		opts.CommitStatus.RepoID = opts.Repo.ID
 		opts.CommitStatus.Index = idx
 		log.Debug("NewCommitStatus[%s, %s]: %d", opts.Repo.FullName(), opts.SHA, opts.CommitStatus.Index)
 
-		opts.CommitStatus.ContextHash = hashCommitStatusContext(opts.CommitStatus.Context)
+		// Callers may pre-compute a ContextHash to keep entries that share a
+		// human-readable Context separated (e.g. two workflow files with the
+		// same `name:` — issue #35699). Only derive from Context when unset.
+		if opts.CommitStatus.ContextHash == "" {
+			opts.CommitStatus.ContextHash = HashCommitStatusContext(opts.CommitStatus.Context)
+		}
 
 		// Insert new CommitStatus
 		if err = db.Insert(ctx, opts.CommitStatus); err != nil {
@@ -529,8 +535,11 @@ type SignCommitWithStatuses struct {
 	*asymkey_model.SignCommit
 }
 
-// hashCommitStatusContext hash context
-func hashCommitStatusContext(context string) string {
+// HashCommitStatusContext returns the sha1 hash used to dedupe commit statuses
+// by Context. Callers that need to keep statuses with the same display Context
+// separated (e.g. distinct workflow files sharing a `name:`) can mix extra
+// disambiguating data into the input.
+func HashCommitStatusContext(context string) string {
 	return fmt.Sprintf("%x", sha1.Sum([]byte(context)))
 }