Use test context in tests and new loop system in benchmarks (#33648)

Replace all contexts in tests with go1.24 t.Context()

---------

Co-authored-by: Giteabot <teabot@gitea.io>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

modules/git/commit_test.go

@@ -4,7 +4,6 @@
 package git
 
 import (
-	"context"
 	"os"
 	"path/filepath"
 	"strings"
@@ -347,7 +346,7 @@ func TestGetCommitFileStatusMerges(t *testing.T) {
 
 func Test_GetCommitBranchStart(t *testing.T) {
 	bareRepo1Path := filepath.Join(testReposDir, "repo1_bare")
-	repo, err := OpenRepository(context.Background(), bareRepo1Path)
+	repo, err := OpenRepository(t.Context(), bareRepo1Path)
 	assert.NoError(t, err)
 	defer repo.Close()
 	commit, err := repo.GetBranchCommit("branch1")