Display total commit count in hook message (#21400) (#21481)

Backport of #21400

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

services/webhook/telegram.go

@@ -89,11 +89,11 @@ func (t *TelegramPayload) Push(p *api.PushPayload) (api.Payloader, error) {
 	)
 
 	var titleLink string
-	if len(p.Commits) == 1 {
+	if p.TotalCommits == 1 {
 		commitDesc = "1 new commit"
 		titleLink = p.Commits[0].URL
 	} else {
-		commitDesc = fmt.Sprintf("%d new commits", len(p.Commits))
+		commitDesc = fmt.Sprintf("%d new commits", p.TotalCommits)
 		titleLink = p.CompareURL
 	}
 	if titleLink == "" {