Gitea Actions incorrectly applies path filter on tag push

[kosmoz]

Description

Path filters should not be evaluated for tag pushes. Consider the following Workflow definition:

on: 
  push:
    paths: 
      - foo/**
jobs: 
  hello:
    runs-on: ubuntu-latest
    steps:
      - run: echo hello

In GitHub, when a tag is pushed, this workflow is always executed.
In Gitea, it is only executed if the path filter applies to the commit referenced by the tag (I think??).

Looking at the source seems to confirm this:

gitea/modules/actions/workflows.go

Lines 313 to 338 in bde014e

	case "paths":
	filesChanged, err := commit.GetFilesChangedSinceCommit(pushPayload.Before)
	if err != nil {
	log.Error("GetFilesChangedSinceCommit [commit_sha1: %s]: %v", commit.ID.String(), err)
	} else {
	patterns, err := workflowpattern.CompilePatterns(vals...)
	if err != nil {
	break
	}
	if !workflowpattern.Skip(patterns, filesChanged, &workflowpattern.EmptyTraceWriter{}) {
	matchTimes++
	}
	}
	case "paths-ignore":
	filesChanged, err := commit.GetFilesChangedSinceCommit(pushPayload.Before)
	if err != nil {
	log.Error("GetFilesChangedSinceCommit [commit_sha1: %s]: %v", commit.ID.String(), err)
	} else {
	patterns, err := workflowpattern.CompilePatterns(vals...)
	if err != nil {
	break
	}
	if !workflowpattern.Filter(patterns, filesChanged, &workflowpattern.EmptyTraceWriter{}) {
	matchTimes++
	}
	}

The correct behavior is documented here: https://docs.github.com/en/actions/writing-workflows/workflow-syntax-for-github-actions#onpushpull_requestpull_request_targetpathspaths-ignore

Gitea Version

1.23.7

Can you reproduce the bug on the Gitea demo site?

No

Log Gist

No response

Screenshots

No response

Git Version

No response

Operating System

Linux

How are you running Gitea?

Official docker image in Kubernetes

Database

PostgreSQL