More refactoring of db.DefaultContext (#27083)

Next step of #27065

routers/api/v1/user/watch.go

@@ -124,7 +124,7 @@ func IsWatching(ctx *context.APIContext) {
 	//   "404":
 	//     description: User is not watching this repo or repo do not exist
 
-	if repo_model.IsWatching(ctx.Doer.ID, ctx.Repo.Repository.ID) {
+	if repo_model.IsWatching(ctx, ctx.Doer.ID, ctx.Repo.Repository.ID) {
 		ctx.JSON(http.StatusOK, api.WatchInfo{
 			Subscribed:    true,
 			Ignored:       false,